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Finding the Fourth Proportional to 72,712.98, 100,372.50 and 45,850.14

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Solution

The fourth proportional to 72,712.98, 100,372.50 and 45,850.14 is: 63,291.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,712.98 : 100,372.50 = 45,850.14 : x
  2. Step 2: Convert to fraction form
    72,712.98/100,372.50 = 45,850.14/x
  3. Step 3: Cross multiply
    72,712.98x = 100,372.50 × 45,850.14
  4. Step 4: Simplify right side
    72,712.98x = 4,602,093,177.15
  5. Step 5: Solve for x
    x = 4,602,093,177.15/72,712.98
  6. Step 6: Final answer
    x = 63,291.22

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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.