Home / 85,113.13-117,459.76-47,387.38

Finding the Fourth Proportional to 85,113.13, 117,459.76 and 47,387.38

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Solution

The fourth proportional to 85,113.13, 117,459.76 and 47,387.38 is: 65,396.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,113.13 : 117,459.76 = 47,387.38 : x
  2. Step 2: Convert to fraction form
    85,113.13/117,459.76 = 47,387.38/x
  3. Step 3: Cross multiply
    85,113.13x = 117,459.76 × 47,387.38
  4. Step 4: Simplify right side
    85,113.13x = 5,566,109,694.53
  5. Step 5: Solve for x
    x = 5,566,109,694.53/85,113.13
  6. Step 6: Final answer
    x = 65,396.61

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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.