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Finding the Fourth Proportional to 60,818.20, 91,205.70 and 42,098.20

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Solution

The fourth proportional to 60,818.20, 91,205.70 and 42,098.20 is: 63,132.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,818.20 : 91,205.70 = 42,098.20 : x
  2. Step 2: Convert to fraction form
    60,818.20/91,205.70 = 42,098.20/x
  3. Step 3: Cross multiply
    60,818.20x = 91,205.70 × 42,098.20
  4. Step 4: Simplify right side
    60,818.20x = 3,839,595,799.74
  5. Step 5: Solve for x
    x = 3,839,595,799.74/60,818.20
  6. Step 6: Final answer
    x = 63,132.35

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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.