Home / 78,515.29-117,728.18-53,585.52

Finding the Fourth Proportional to 78,515.29, 117,728.18 and 53,585.52

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Solution

The fourth proportional to 78,515.29, 117,728.18 and 53,585.52 is: 80,347.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,515.29 : 117,728.18 = 53,585.52 : x
  2. Step 2: Convert to fraction form
    78,515.29/117,728.18 = 53,585.52/x
  3. Step 3: Cross multiply
    78,515.29x = 117,728.18 × 53,585.52
  4. Step 4: Simplify right side
    78,515.29x = 6,308,525,536.91
  5. Step 5: Solve for x
    x = 6,308,525,536.91/78,515.29
  6. Step 6: Final answer
    x = 80,347.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.