Home / 61,387.20-91,569.60-60,371.28

Finding the Fourth Proportional to 61,387.20, 91,569.60 and 60,371.28

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Solution

The fourth proportional to 61,387.20, 91,569.60 and 60,371.28 is: 90,054.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,387.20 : 91,569.60 = 60,371.28 : x
  2. Step 2: Convert to fraction form
    61,387.20/91,569.60 = 60,371.28/x
  3. Step 3: Cross multiply
    61,387.20x = 91,569.60 × 60,371.28
  4. Step 4: Simplify right side
    61,387.20x = 5,528,173,961.09
  5. Step 5: Solve for x
    x = 5,528,173,961.09/61,387.20
  6. Step 6: Final answer
    x = 90,054.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.