Home / 81,440.64-112,385.07-47,451.02

Finding the Fourth Proportional to 81,440.64, 112,385.07 and 47,451.02

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Solution

The fourth proportional to 81,440.64, 112,385.07 and 47,451.02 is: 65,480.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,440.64 : 112,385.07 = 47,451.02 : x
  2. Step 2: Convert to fraction form
    81,440.64/112,385.07 = 47,451.02/x
  3. Step 3: Cross multiply
    81,440.64x = 112,385.07 × 47,451.02
  4. Step 4: Simplify right side
    81,440.64x = 5,332,785,642.35
  5. Step 5: Solve for x
    x = 5,332,785,642.35/81,440.64
  6. Step 6: Final answer
    x = 65,480.65

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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.