Home / 92,975.20-128,367.56-71,426.57

Finding the Fourth Proportional to 92,975.20, 128,367.56 and 71,426.57

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Solution

The fourth proportional to 92,975.20, 128,367.56 and 71,426.57 is: 98,616.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,975.20 : 128,367.56 = 71,426.57 : x
  2. Step 2: Convert to fraction form
    92,975.20/128,367.56 = 71,426.57/x
  3. Step 3: Cross multiply
    92,975.20x = 128,367.56 × 71,426.57
  4. Step 4: Simplify right side
    92,975.20x = 9,168,854,046.80
  5. Step 5: Solve for x
    x = 9,168,854,046.80/92,975.20
  6. Step 6: Final answer
    x = 98,616.13

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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.