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Finding the Fourth Proportional to 90,355.91, 124,687.76 and 52,117.07

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Solution

The fourth proportional to 90,355.91, 124,687.76 and 52,117.07 is: 71,919.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,355.91 : 124,687.76 = 52,117.07 : x
  2. Step 2: Convert to fraction form
    90,355.91/124,687.76 = 52,117.07/x
  3. Step 3: Cross multiply
    90,355.91x = 124,687.76 × 52,117.07
  4. Step 4: Simplify right side
    90,355.91x = 6,498,359,832.04
  5. Step 5: Solve for x
    x = 6,498,359,832.04/90,355.91
  6. Step 6: Final answer
    x = 71,919.59

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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.