Home / 85,129.72-117,487.18-47,403.96

Finding the Fourth Proportional to 85,129.72, 117,487.18 and 47,403.96

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Solution

The fourth proportional to 85,129.72, 117,487.18 and 47,403.96 is: 65,422.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,129.72 : 117,487.18 = 47,403.96 : x
  2. Step 2: Convert to fraction form
    85,129.72/117,487.18 = 47,403.96/x
  3. Step 3: Cross multiply
    85,129.72x = 117,487.18 × 47,403.96
  4. Step 4: Simplify right side
    85,129.72x = 5,569,357,581.23
  5. Step 5: Solve for x
    x = 5,569,357,581.23/85,129.72
  6. Step 6: Final answer
    x = 65,422.01

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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.