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Finding the Fourth Proportional to 90,105.66, 124,318.50 and 62,881.02

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Solution

The fourth proportional to 90,105.66, 124,318.50 and 62,881.02 is: 86,756.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,105.66 : 124,318.50 = 62,881.02 : x
  2. Step 2: Convert to fraction form
    90,105.66/124,318.50 = 62,881.02/x
  3. Step 3: Cross multiply
    90,105.66x = 124,318.50 × 62,881.02
  4. Step 4: Simplify right side
    90,105.66x = 7,817,274,084.87
  5. Step 5: Solve for x
    x = 7,817,274,084.87/90,105.66
  6. Step 6: Final answer
    x = 86,756.75

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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.