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Finding the Fourth Proportional to 52,990.74, 79,473.76 and 19,726.47

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Solution

The fourth proportional to 52,990.74, 79,473.76 and 19,726.47 is: 29,585.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,990.74 : 79,473.76 = 19,726.47 : x
  2. Step 2: Convert to fraction form
    52,990.74/79,473.76 = 19,726.47/x
  3. Step 3: Cross multiply
    52,990.74x = 79,473.76 × 19,726.47
  4. Step 4: Simplify right side
    52,990.74x = 1,567,736,742.43
  5. Step 5: Solve for x
    x = 1,567,736,742.43/52,990.74
  6. Step 6: Final answer
    x = 29,585.11

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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.