Home / 81,444.16-112,391.04-47,912.32

Finding the Fourth Proportional to 81,444.16, 112,391.04 and 47,912.32

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Solution

The fourth proportional to 81,444.16, 112,391.04 and 47,912.32 is: 66,117.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,444.16 : 112,391.04 = 47,912.32 : x
  2. Step 2: Convert to fraction form
    81,444.16/112,391.04 = 47,912.32/x
  3. Step 3: Cross multiply
    81,444.16x = 112,391.04 × 47,912.32
  4. Step 4: Simplify right side
    81,444.16x = 5,384,915,473.61
  5. Step 5: Solve for x
    x = 5,384,915,473.61/81,444.16
  6. Step 6: Final answer
    x = 66,117.88

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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.