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Finding the Fourth Proportional to 49,459.80, 74,189.70 and 47,710.20

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Solution

The fourth proportional to 49,459.80, 74,189.70 and 47,710.20 is: 71,565.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,459.80 : 74,189.70 = 47,710.20 : x
  2. Step 2: Convert to fraction form
    49,459.80/74,189.70 = 47,710.20/x
  3. Step 3: Cross multiply
    49,459.80x = 74,189.70 × 47,710.20
  4. Step 4: Simplify right side
    49,459.80x = 3,539,605,424.94
  5. Step 5: Solve for x
    x = 3,539,605,424.94/49,459.80
  6. Step 6: Final answer
    x = 71,565.30

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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.