Home / 72,262.60-99,718.32-39,995.44

Finding the Fourth Proportional to 72,262.60, 99,718.32 and 39,995.44

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Solution

The fourth proportional to 72,262.60, 99,718.32 and 39,995.44 is: 55,191.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,262.60 : 99,718.32 = 39,995.44 : x
  2. Step 2: Convert to fraction form
    72,262.60/99,718.32 = 39,995.44/x
  3. Step 3: Cross multiply
    72,262.60x = 99,718.32 × 39,995.44
  4. Step 4: Simplify right side
    72,262.60x = 3,988,278,084.46
  5. Step 5: Solve for x
    x = 3,988,278,084.46/72,262.60
  6. Step 6: Final answer
    x = 55,191.46

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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.