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Finding the Fourth Proportional to 72,257.59, 99,743.16 and 48,375.55

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Solution

The fourth proportional to 72,257.59, 99,743.16 and 48,375.55 is: 66,776.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,257.59 : 99,743.16 = 48,375.55 : x
  2. Step 2: Convert to fraction form
    72,257.59/99,743.16 = 48,375.55/x
  3. Step 3: Cross multiply
    72,257.59x = 99,743.16 × 48,375.55
  4. Step 4: Simplify right side
    72,257.59x = 4,825,130,223.74
  5. Step 5: Solve for x
    x = 4,825,130,223.74/72,257.59
  6. Step 6: Final answer
    x = 66,776.79

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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.