Home / 85,132.12-117,484.22-47,409.88

Finding the Fourth Proportional to 85,132.12, 117,484.22 and 47,409.88

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Solution

The fourth proportional to 85,132.12, 117,484.22 and 47,409.88 is: 65,426.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,132.12 : 117,484.22 = 47,409.88 : x
  2. Step 2: Convert to fraction form
    85,132.12/117,484.22 = 47,409.88/x
  3. Step 3: Cross multiply
    85,132.12x = 117,484.22 × 47,409.88
  4. Step 4: Simplify right side
    85,132.12x = 5,569,912,772.09
  5. Step 5: Solve for x
    x = 5,569,912,772.09/85,132.12
  6. Step 6: Final answer
    x = 65,426.69

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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.