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Finding the Fourth Proportional to 73,648, 110,476.80 and 21,061.76

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Solution

The fourth proportional to 73,648, 110,476.80 and 21,061.76 is: 31,594.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,648 : 110,476.80 = 21,061.76 : x
  2. Step 2: Convert to fraction form
    73,648/110,476.80 = 21,061.76/x
  3. Step 3: Cross multiply
    73,648x = 110,476.80 × 21,061.76
  4. Step 4: Simplify right side
    73,648x = 2,326,835,847.17
  5. Step 5: Solve for x
    x = 2,326,835,847.17/73,648
  6. Step 6: Final answer
    x = 31,594.01

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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.