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Finding the Fourth Proportional to 72,294.48, 99,754.47 and 45,417.96

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Solution

The fourth proportional to 72,294.48, 99,754.47 and 45,417.96 is: 62,669.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,294.48 : 99,754.47 = 45,417.96 : x
  2. Step 2: Convert to fraction form
    72,294.48/99,754.47 = 45,417.96/x
  3. Step 3: Cross multiply
    72,294.48x = 99,754.47 × 45,417.96
  4. Step 4: Simplify right side
    72,294.48x = 4,530,644,528.28
  5. Step 5: Solve for x
    x = 4,530,644,528.28/72,294.48
  6. Step 6: Final answer
    x = 62,669.30

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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.