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Finding the Fourth Proportional to 79,576.70, 109,810.50 and 45,585.32

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Solution

The fourth proportional to 79,576.70, 109,810.50 and 45,585.32 is: 62,904.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,576.70 : 109,810.50 = 45,585.32 : x
  2. Step 2: Convert to fraction form
    79,576.70/109,810.50 = 45,585.32/x
  3. Step 3: Cross multiply
    79,576.70x = 109,810.50 × 45,585.32
  4. Step 4: Simplify right side
    79,576.70x = 5,005,746,781.86
  5. Step 5: Solve for x
    x = 5,005,746,781.86/79,576.70
  6. Step 6: Final answer
    x = 62,904.68

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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.