Home / 81,143.32-112,120.88-62,442.04

Finding the Fourth Proportional to 81,143.32, 112,120.88 and 62,442.04

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Solution

The fourth proportional to 81,143.32, 112,120.88 and 62,442.04 is: 86,280.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,143.32 : 112,120.88 = 62,442.04 : x
  2. Step 2: Convert to fraction form
    81,143.32/112,120.88 = 62,442.04/x
  3. Step 3: Cross multiply
    81,143.32x = 112,120.88 × 62,442.04
  4. Step 4: Simplify right side
    81,143.32x = 7,001,056,473.80
  5. Step 5: Solve for x
    x = 7,001,056,473.80/81,143.32
  6. Step 6: Final answer
    x = 86,280.13

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1.5x scale

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.