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Finding the Fourth Proportional to 61,369.52, 84,637.48 and 42,279.76

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Solution

The fourth proportional to 61,369.52, 84,637.48 and 42,279.76 is: 58,309.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,369.52 : 84,637.48 = 42,279.76 : x
  2. Step 2: Convert to fraction form
    61,369.52/84,637.48 = 42,279.76/x
  3. Step 3: Cross multiply
    61,369.52x = 84,637.48 × 42,279.76
  4. Step 4: Simplify right side
    61,369.52x = 3,578,452,341.40
  5. Step 5: Solve for x
    x = 3,578,452,341.40/61,369.52
  6. Step 6: Final answer
    x = 58,309.93

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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.