Home / 78,825.24-118,275.06-39,385.56

Finding the Fourth Proportional to 78,825.24, 118,275.06 and 39,385.56

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Solution

The fourth proportional to 78,825.24, 118,275.06 and 39,385.56 is: 59,096.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,825.24 : 118,275.06 = 39,385.56 : x
  2. Step 2: Convert to fraction form
    78,825.24/118,275.06 = 39,385.56/x
  3. Step 3: Cross multiply
    78,825.24x = 118,275.06 × 39,385.56
  4. Step 4: Simplify right side
    78,825.24x = 4,658,329,472.13
  5. Step 5: Solve for x
    x = 4,658,329,472.13/78,825.24
  6. Step 6: Final answer
    x = 59,096.93

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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.