Home / 71,484.46-98,660.34-39,663.61

Finding the Fourth Proportional to 71,484.46, 98,660.34 and 39,663.61

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Solution

The fourth proportional to 71,484.46, 98,660.34 and 39,663.61 is: 54,742.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,484.46 : 98,660.34 = 39,663.61 : x
  2. Step 2: Convert to fraction form
    71,484.46/98,660.34 = 39,663.61/x
  3. Step 3: Cross multiply
    71,484.46x = 98,660.34 × 39,663.61
  4. Step 4: Simplify right side
    71,484.46x = 3,913,225,001.58
  5. Step 5: Solve for x
    x = 3,913,225,001.58/71,484.46
  6. Step 6: Final answer
    x = 54,742.32

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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.