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Finding the Fourth Proportional to 112,714.08, 155,545.56 and 62,412

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Solution

The fourth proportional to 112,714.08, 155,545.56 and 62,412 is: 86,128.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,714.08 : 155,545.56 = 62,412 : x
  2. Step 2: Convert to fraction form
    112,714.08/155,545.56 = 62,412/x
  3. Step 3: Cross multiply
    112,714.08x = 155,545.56 × 62,412
  4. Step 4: Simplify right side
    112,714.08x = 9,707,909,490.72
  5. Step 5: Solve for x
    x = 9,707,909,490.72/112,714.08
  6. Step 6: Final answer
    x = 86,128.63

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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.