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Finding the Fourth Proportional to 112,959.48, 155,879.82 and 62,657.40

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Solution

The fourth proportional to 112,959.48, 155,879.82 and 62,657.40 is: 86,464.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,959.48 : 155,879.82 = 62,657.40 : x
  2. Step 2: Convert to fraction form
    112,959.48/155,879.82 = 62,657.40/x
  3. Step 3: Cross multiply
    112,959.48x = 155,879.82 × 62,657.40
  4. Step 4: Simplify right side
    112,959.48x = 9,767,024,233.67
  5. Step 5: Solve for x
    x = 9,767,024,233.67/112,959.48
  6. Step 6: Final answer
    x = 86,464.85

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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.