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Finding the Fourth Proportional to 72,270.93, 99,721.97 and 45,394.29

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Solution

The fourth proportional to 72,270.93, 99,721.97 and 45,394.29 is: 62,636.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,270.93 : 99,721.97 = 45,394.29 : x
  2. Step 2: Convert to fraction form
    72,270.93/99,721.97 = 45,394.29/x
  3. Step 3: Cross multiply
    72,270.93x = 99,721.97 × 45,394.29
  4. Step 4: Simplify right side
    72,270.93x = 4,526,807,798.58
  5. Step 5: Solve for x
    x = 4,526,807,798.58/72,270.93
  6. Step 6: Final answer
    x = 62,636.63

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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.