Home / 40,780.38-61,187.58-15,837.78

Finding the Fourth Proportional to 40,780.38, 61,187.58 and 15,837.78

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Solution

The fourth proportional to 40,780.38, 61,187.58 and 15,837.78 is: 23,763.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,780.38 : 61,187.58 = 15,837.78 : x
  2. Step 2: Convert to fraction form
    40,780.38/61,187.58 = 15,837.78/x
  3. Step 3: Cross multiply
    40,780.38x = 61,187.58 × 15,837.78
  4. Step 4: Simplify right side
    40,780.38x = 969,075,430.77
  5. Step 5: Solve for x
    x = 969,075,430.77/40,780.38
  6. Step 6: Final answer
    x = 23,763.28

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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.