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Finding the Fourth Proportional to 90,471.40, 135,707.10 and 62,477.80

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Solution

The fourth proportional to 90,471.40, 135,707.10 and 62,477.80 is: 93,716.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,471.40 : 135,707.10 = 62,477.80 : x
  2. Step 2: Convert to fraction form
    90,471.40/135,707.10 = 62,477.80/x
  3. Step 3: Cross multiply
    90,471.40x = 135,707.10 × 62,477.80
  4. Step 4: Simplify right side
    90,471.40x = 8,478,681,052.38
  5. Step 5: Solve for x
    x = 8,478,681,052.38/90,471.40
  6. Step 6: Final answer
    x = 93,716.70

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1.5x scale

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.