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Finding the Fourth Proportional to 90,565.56, 135,853.20 and 37,977.12

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Solution

The fourth proportional to 90,565.56, 135,853.20 and 37,977.12 is: 56,967.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,565.56 : 135,853.20 = 37,977.12 : x
  2. Step 2: Convert to fraction form
    90,565.56/135,853.20 = 37,977.12/x
  3. Step 3: Cross multiply
    90,565.56x = 135,853.20 × 37,977.12
  4. Step 4: Simplify right side
    90,565.56x = 5,159,313,278.78
  5. Step 5: Solve for x
    x = 5,159,313,278.78/90,565.56
  6. Step 6: Final answer
    x = 56,967.72

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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.