Home / 72,128,807,377.60-99,537,871,278.48-40,014,170,363.20

Finding the Fourth Proportional to 72,128,807,377.60, 99,537,871,278.48 and 40,014,170,363.20

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Solution

The fourth proportional to 72,128,807,377.60, 99,537,871,278.48 and 40,014,170,363.20 is: 55,219,620,062.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,128,807,377.60 : 99,537,871,278.48 = 40,014,170,363.20 : x
  2. Step 2: Convert to fraction form
    72,128,807,377.60/99,537,871,278.48 = 40,014,170,363.20/x
  3. Step 3: Cross multiply
    72,128,807,377.60x = 99,537,871,278.48 × 40,014,170,363.20
  4. Step 4: Simplify right side
    72,128,807,377.60x = 3,982,925,338,927,370,338,304
  5. Step 5: Solve for x
    x = 3,982,925,338,927,370,338,304/72,128,807,377.60
  6. Step 6: Final answer
    x = 55,219,620,062.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.