Home / 72,306.16-99,781.46-40,037.70

Finding the Fourth Proportional to 72,306.16, 99,781.46 and 40,037.70

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Solution

The fourth proportional to 72,306.16, 99,781.46 and 40,037.70 is: 55,251.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,306.16 : 99,781.46 = 40,037.70 : x
  2. Step 2: Convert to fraction form
    72,306.16/99,781.46 = 40,037.70/x
  3. Step 3: Cross multiply
    72,306.16x = 99,781.46 × 40,037.70
  4. Step 4: Simplify right side
    72,306.16x = 3,995,020,161.04
  5. Step 5: Solve for x
    x = 3,995,020,161.04/72,306.16
  6. Step 6: Final answer
    x = 55,251.45

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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.