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Finding the Fourth Proportional to 90,892.86, 136,357.72 and 38,302.32

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Solution

The fourth proportional to 90,892.86, 136,357.72 and 38,302.32 is: 57,461.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,892.86 : 136,357.72 = 38,302.32 : x
  2. Step 2: Convert to fraction form
    90,892.86/136,357.72 = 38,302.32/x
  3. Step 3: Cross multiply
    90,892.86x = 136,357.72 × 38,302.32
  4. Step 4: Simplify right side
    90,892.86x = 5,222,817,025.91
  5. Step 5: Solve for x
    x = 5,222,817,025.91/90,892.86
  6. Step 6: Final answer
    x = 57,461.25

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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.