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Finding the Fourth Proportional to 74,732.05, 111,602.72 and 65,677.87

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Solution

The fourth proportional to 74,732.05, 111,602.72 and 65,677.87 is: 98,081.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,732.05 : 111,602.72 = 65,677.87 : x
  2. Step 2: Convert to fraction form
    74,732.05/111,602.72 = 65,677.87/x
  3. Step 3: Cross multiply
    74,732.05x = 111,602.72 × 65,677.87
  4. Step 4: Simplify right side
    74,732.05x = 7,329,828,328.41
  5. Step 5: Solve for x
    x = 7,329,828,328.41/74,732.05
  6. Step 6: Final answer
    x = 98,081.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.