Home / 78,728.18-118,030.82-53,706.20

Finding the Fourth Proportional to 78,728.18, 118,030.82 and 53,706.20

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Solution

The fourth proportional to 78,728.18, 118,030.82 and 53,706.20 is: 80,517.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,728.18 : 118,030.82 = 53,706.20 : x
  2. Step 2: Convert to fraction form
    78,728.18/118,030.82 = 53,706.20/x
  3. Step 3: Cross multiply
    78,728.18x = 118,030.82 × 53,706.20
  4. Step 4: Simplify right side
    78,728.18x = 6,338,986,825.08
  5. Step 5: Solve for x
    x = 6,338,986,825.08/78,728.18
  6. Step 6: Final answer
    x = 80,517.38

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1.5x scale

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.