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Finding the Fourth Proportional to 74,079.50, 102,024.56 and 64,004.72

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Solution

The fourth proportional to 74,079.50, 102,024.56 and 64,004.72 is: 88,149.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,079.50 : 102,024.56 = 64,004.72 : x
  2. Step 2: Convert to fraction form
    74,079.50/102,024.56 = 64,004.72/x
  3. Step 3: Cross multiply
    74,079.50x = 102,024.56 × 64,004.72
  4. Step 4: Simplify right side
    74,079.50x = 6,530,053,045.81
  5. Step 5: Solve for x
    x = 6,530,053,045.81/74,079.50
  6. Step 6: Final answer
    x = 88,149.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.