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Finding the Fourth Proportional to 40,742.44, 61,100.88 and 15,780.76

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Solution

The fourth proportional to 40,742.44, 61,100.88 and 15,780.76 is: 23,666.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,742.44 : 61,100.88 = 15,780.76 : x
  2. Step 2: Convert to fraction form
    40,742.44/61,100.88 = 15,780.76/x
  3. Step 3: Cross multiply
    40,742.44x = 61,100.88 × 15,780.76
  4. Step 4: Simplify right side
    40,742.44x = 964,218,323.07
  5. Step 5: Solve for x
    x = 964,218,323.07/40,742.44
  6. Step 6: Final answer
    x = 23,666.19

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1.5x scale

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.