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Finding the Fourth Proportional to 60,873.61, 83,962 and 42,728.40

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Solution

The fourth proportional to 60,873.61, 83,962 and 42,728.40 is: 58,934.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,873.61 : 83,962 = 42,728.40 : x
  2. Step 2: Convert to fraction form
    60,873.61/83,962 = 42,728.40/x
  3. Step 3: Cross multiply
    60,873.61x = 83,962 × 42,728.40
  4. Step 4: Simplify right side
    60,873.61x = 3,587,561,920.80
  5. Step 5: Solve for x
    x = 3,587,561,920.80/60,873.61
  6. Step 6: Final answer
    x = 58,934.60

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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.