Home / 42,085.88-63,139.38-12,100.16

Finding the Fourth Proportional to 42,085.88, 63,139.38 and 12,100.16

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Solution

The fourth proportional to 42,085.88, 63,139.38 and 12,100.16 is: 18,153.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,085.88 : 63,139.38 = 12,100.16 : x
  2. Step 2: Convert to fraction form
    42,085.88/63,139.38 = 12,100.16/x
  3. Step 3: Cross multiply
    42,085.88x = 63,139.38 × 12,100.16
  4. Step 4: Simplify right side
    42,085.88x = 763,996,600.30
  5. Step 5: Solve for x
    x = 763,996,600.30/42,085.88
  6. Step 6: Final answer
    x = 18,153.28

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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.