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Finding the Fourth Proportional to 81,293.12, 112,186.92 and 45,482.32

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Solution

The fourth proportional to 81,293.12, 112,186.92 and 45,482.32 is: 62,766.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,293.12 : 112,186.92 = 45,482.32 : x
  2. Step 2: Convert to fraction form
    81,293.12/112,186.92 = 45,482.32/x
  3. Step 3: Cross multiply
    81,293.12x = 112,186.92 × 45,482.32
  4. Step 4: Simplify right side
    81,293.12x = 5,102,521,395.25
  5. Step 5: Solve for x
    x = 5,102,521,395.25/81,293.12
  6. Step 6: Final answer
    x = 62,766.95

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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.