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Finding the Fourth Proportional to 65,356.14, 90,207.84 and 38,488.86

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Solution

The fourth proportional to 65,356.14, 90,207.84 and 38,488.86 is: 53,124.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,356.14 : 90,207.84 = 38,488.86 : x
  2. Step 2: Convert to fraction form
    65,356.14/90,207.84 = 38,488.86/x
  3. Step 3: Cross multiply
    65,356.14x = 90,207.84 × 38,488.86
  4. Step 4: Simplify right side
    65,356.14x = 3,471,996,924.66
  5. Step 5: Solve for x
    x = 3,471,996,924.66/65,356.14
  6. Step 6: Final answer
    x = 53,124.27

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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.