Home / 42,001.20-57,963.60-28,587.60

Finding the Fourth Proportional to 42,001.20, 57,963.60 and 28,587.60

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Solution

The fourth proportional to 42,001.20, 57,963.60 and 28,587.60 is: 39,452.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,001.20 : 57,963.60 = 28,587.60 : x
  2. Step 2: Convert to fraction form
    42,001.20/57,963.60 = 28,587.60/x
  3. Step 3: Cross multiply
    42,001.20x = 57,963.60 × 28,587.60
  4. Step 4: Simplify right side
    42,001.20x = 1,657,040,211.36
  5. Step 5: Solve for x
    x = 1,657,040,211.36/42,001.20
  6. Step 6: Final answer
    x = 39,452.21

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1.5x scale

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.