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Finding the Fourth Proportional to 78,452.43, 108,266.48 and 42,644.87

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Solution

The fourth proportional to 78,452.43, 108,266.48 and 42,644.87 is: 58,851.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,452.43 : 108,266.48 = 42,644.87 : x
  2. Step 2: Convert to fraction form
    78,452.43/108,266.48 = 42,644.87/x
  3. Step 3: Cross multiply
    78,452.43x = 108,266.48 × 42,644.87
  4. Step 4: Simplify right side
    78,452.43x = 4,617,009,210.40
  5. Step 5: Solve for x
    x = 4,617,009,210.40/78,452.43
  6. Step 6: Final answer
    x = 58,851.07

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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.