Home / 40,837.20-61,255.80-13,135.20

Finding the Fourth Proportional to 40,837.20, 61,255.80 and 13,135.20

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Solution

The fourth proportional to 40,837.20, 61,255.80 and 13,135.20 is: 19,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,837.20 : 61,255.80 = 13,135.20 : x
  2. Step 2: Convert to fraction form
    40,837.20/61,255.80 = 13,135.20/x
  3. Step 3: Cross multiply
    40,837.20x = 61,255.80 × 13,135.20
  4. Step 4: Simplify right side
    40,837.20x = 804,607,184.16
  5. Step 5: Solve for x
    x = 804,607,184.16/40,837.20
  6. Step 6: Final answer
    x = 19,702.80

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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.