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Finding the Fourth Proportional to 90,904.92, 125,405.71 and 59,062.20

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Solution

The fourth proportional to 90,904.92, 125,405.71 and 59,062.20 is: 81,477.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,904.92 : 125,405.71 = 59,062.20 : x
  2. Step 2: Convert to fraction form
    90,904.92/125,405.71 = 59,062.20/x
  3. Step 3: Cross multiply
    90,904.92x = 125,405.71 × 59,062.20
  4. Step 4: Simplify right side
    90,904.92x = 7,406,737,125.16
  5. Step 5: Solve for x
    x = 7,406,737,125.16/90,904.92
  6. Step 6: Final answer
    x = 81,477.85

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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.