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Finding the Fourth Proportional to 48,378.98, 72,500.42 and 38,474.30

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Solution

The fourth proportional to 48,378.98, 72,500.42 and 38,474.30 is: 57,657.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,378.98 : 72,500.42 = 38,474.30 : x
  2. Step 2: Convert to fraction form
    48,378.98/72,500.42 = 38,474.30/x
  3. Step 3: Cross multiply
    48,378.98x = 72,500.42 × 38,474.30
  4. Step 4: Simplify right side
    48,378.98x = 2,789,402,909.21
  5. Step 5: Solve for x
    x = 2,789,402,909.21/48,378.98
  6. Step 6: Final answer
    x = 57,657.33

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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.