Home / 78,685.22-118,044.62-25,380.20

Finding the Fourth Proportional to 78,685.22, 118,044.62 and 25,380.20

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Solution

The fourth proportional to 78,685.22, 118,044.62 and 25,380.20 is: 38,075.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,685.22 : 118,044.62 = 25,380.20 : x
  2. Step 2: Convert to fraction form
    78,685.22/118,044.62 = 25,380.20/x
  3. Step 3: Cross multiply
    78,685.22x = 118,044.62 × 25,380.20
  4. Step 4: Simplify right side
    78,685.22x = 2,995,995,937.62
  5. Step 5: Solve for x
    x = 2,995,995,937.62/78,685.22
  6. Step 6: Final answer
    x = 38,075.71

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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.