Home / 81,543.76-112,535.03-45,730.91

Finding the Fourth Proportional to 81,543.76, 112,535.03 and 45,730.91

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Solution

The fourth proportional to 81,543.76, 112,535.03 and 45,730.91 is: 63,111.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,543.76 : 112,535.03 = 45,730.91 : x
  2. Step 2: Convert to fraction form
    81,543.76/112,535.03 = 45,730.91/x
  3. Step 3: Cross multiply
    81,543.76x = 112,535.03 × 45,730.91
  4. Step 4: Simplify right side
    81,543.76x = 5,146,329,724.44
  5. Step 5: Solve for x
    x = 5,146,329,724.44/81,543.76
  6. Step 6: Final answer
    x = 63,111.27

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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.