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Finding the Fourth Proportional to 45,987.76, 69,001.04 and 19,704.88

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Solution

The fourth proportional to 45,987.76, 69,001.04 and 19,704.88 is: 29,565.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,987.76 : 69,001.04 = 19,704.88 : x
  2. Step 2: Convert to fraction form
    45,987.76/69,001.04 = 19,704.88/x
  3. Step 3: Cross multiply
    45,987.76x = 69,001.04 × 19,704.88
  4. Step 4: Simplify right side
    45,987.76x = 1,359,657,213.08
  5. Step 5: Solve for x
    x = 1,359,657,213.08/45,987.76
  6. Step 6: Final answer
    x = 29,565.63

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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.