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Finding the Fourth Proportional to 61,788.88, 92,231.12 and 53,079.76

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Solution

The fourth proportional to 61,788.88, 92,231.12 and 53,079.76 is: 79,231.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,788.88 : 92,231.12 = 53,079.76 : x
  2. Step 2: Convert to fraction form
    61,788.88/92,231.12 = 53,079.76/x
  3. Step 3: Cross multiply
    61,788.88x = 92,231.12 × 53,079.76
  4. Step 4: Simplify right side
    61,788.88x = 4,895,605,714.13
  5. Step 5: Solve for x
    x = 4,895,605,714.13/61,788.88
  6. Step 6: Final answer
    x = 79,231.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.