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Finding the Fourth Proportional to 72,374.47, 99,925.53 and 45,191.95

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Solution

The fourth proportional to 72,374.47, 99,925.53 and 45,191.95 is: 62,395.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,374.47 : 99,925.53 = 45,191.95 : x
  2. Step 2: Convert to fraction form
    72,374.47/99,925.53 = 45,191.95/x
  3. Step 3: Cross multiply
    72,374.47x = 99,925.53 × 45,191.95
  4. Step 4: Simplify right side
    72,374.47x = 4,515,829,329.52
  5. Step 5: Solve for x
    x = 4,515,829,329.52/72,374.47
  6. Step 6: Final answer
    x = 62,395.34

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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.