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Finding the Fourth Proportional to 62,490.80, 93,736.20 and 57,679.40

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Solution

The fourth proportional to 62,490.80, 93,736.20 and 57,679.40 is: 86,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,490.80 : 93,736.20 = 57,679.40 : x
  2. Step 2: Convert to fraction form
    62,490.80/93,736.20 = 57,679.40/x
  3. Step 3: Cross multiply
    62,490.80x = 93,736.20 × 57,679.40
  4. Step 4: Simplify right side
    62,490.80x = 5,406,647,774.28
  5. Step 5: Solve for x
    x = 5,406,647,774.28/62,490.80
  6. Step 6: Final answer
    x = 86,519.10

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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.