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Finding the Fourth Proportional to 85,502.60, 117,989.90 and 47,260.16

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Solution

The fourth proportional to 85,502.60, 117,989.90 and 47,260.16 is: 65,216.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,502.60 : 117,989.90 = 47,260.16 : x
  2. Step 2: Convert to fraction form
    85,502.60/117,989.90 = 47,260.16/x
  3. Step 3: Cross multiply
    85,502.60x = 117,989.90 × 47,260.16
  4. Step 4: Simplify right side
    85,502.60x = 5,576,221,552.38
  5. Step 5: Solve for x
    x = 5,576,221,552.38/85,502.60
  6. Step 6: Final answer
    x = 65,216.98

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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.