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Finding the Fourth Proportional to 90,903.92, 125,404.34 and 59,061.20

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Solution

The fourth proportional to 90,903.92, 125,404.34 and 59,061.20 is: 81,476.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,903.92 : 125,404.34 = 59,061.20 : x
  2. Step 2: Convert to fraction form
    90,903.92/125,404.34 = 59,061.20/x
  3. Step 3: Cross multiply
    90,903.92x = 125,404.34 × 59,061.20
  4. Step 4: Simplify right side
    90,903.92x = 7,406,529,883.28
  5. Step 5: Solve for x
    x = 7,406,529,883.28/90,903.92
  6. Step 6: Final answer
    x = 81,476.47

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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.