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Finding the Fourth Proportional to 60,474.60, 90,711.90 and 55,031.40

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Solution

The fourth proportional to 60,474.60, 90,711.90 and 55,031.40 is: 82,547.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,474.60 : 90,711.90 = 55,031.40 : x
  2. Step 2: Convert to fraction form
    60,474.60/90,711.90 = 55,031.40/x
  3. Step 3: Cross multiply
    60,474.60x = 90,711.90 × 55,031.40
  4. Step 4: Simplify right side
    60,474.60x = 4,992,002,853.66
  5. Step 5: Solve for x
    x = 4,992,002,853.66/60,474.60
  6. Step 6: Final answer
    x = 82,547.10

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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.