Home / 81,449.16-112,397.94-47,917.32

Finding the Fourth Proportional to 81,449.16, 112,397.94 and 47,917.32

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Solution

The fourth proportional to 81,449.16, 112,397.94 and 47,917.32 is: 66,124.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,449.16 : 112,397.94 = 47,917.32 : x
  2. Step 2: Convert to fraction form
    81,449.16/112,397.94 = 47,917.32/x
  3. Step 3: Cross multiply
    81,449.16x = 112,397.94 × 47,917.32
  4. Step 4: Simplify right side
    81,449.16x = 5,385,808,058.32
  5. Step 5: Solve for x
    x = 5,385,808,058.32/81,449.16
  6. Step 6: Final answer
    x = 66,124.78

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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.