Home / 70,128,010.80-105,192,016.20-39,517,009.20

Finding the Fourth Proportional to 70,128,010.80, 105,192,016.20 and 39,517,009.20

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Solution

The fourth proportional to 70,128,010.80, 105,192,016.20 and 39,517,009.20 is: 59,275,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,128,010.80 : 105,192,016.20 = 39,517,009.20 : x
  2. Step 2: Convert to fraction form
    70,128,010.80/105,192,016.20 = 39,517,009.20/x
  3. Step 3: Cross multiply
    70,128,010.80x = 105,192,016.20 × 39,517,009.20
  4. Step 4: Simplify right side
    70,128,010.80x = 4,156,873,871,941,949.50
  5. Step 5: Solve for x
    x = 4,156,873,871,941,949.50/70,128,010.80
  6. Step 6: Final answer
    x = 59,275,513.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.