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Finding the Fourth Proportional to 74,510.70, 111,521.71 and 40,724.96

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Solution

The fourth proportional to 74,510.70, 111,521.71 and 40,724.96 is: 60,953.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,510.70 : 111,521.71 = 40,724.96 : x
  2. Step 2: Convert to fraction form
    74,510.70/111,521.71 = 40,724.96/x
  3. Step 3: Cross multiply
    74,510.70x = 111,521.71 × 40,724.96
  4. Step 4: Simplify right side
    74,510.70x = 4,541,717,178.88
  5. Step 5: Solve for x
    x = 4,541,717,178.88/74,510.70
  6. Step 6: Final answer
    x = 60,953.89

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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.