Home / 85,120.52-117,459.06-47,398.28

Finding the Fourth Proportional to 85,120.52, 117,459.06 and 47,398.28

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Solution

The fourth proportional to 85,120.52, 117,459.06 and 47,398.28 is: 65,405.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,120.52 : 117,459.06 = 47,398.28 : x
  2. Step 2: Convert to fraction form
    85,120.52/117,459.06 = 47,398.28/x
  3. Step 3: Cross multiply
    85,120.52x = 117,459.06 × 47,398.28
  4. Step 4: Simplify right side
    85,120.52x = 5,567,357,414.42
  5. Step 5: Solve for x
    x = 5,567,357,414.42/85,120.52
  6. Step 6: Final answer
    x = 65,405.59

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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.