Home / 78,387.02-108,174.07-42,577.10

Finding the Fourth Proportional to 78,387.02, 108,174.07 and 42,577.10

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Solution

The fourth proportional to 78,387.02, 108,174.07 and 42,577.10 is: 58,756.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,387.02 : 108,174.07 = 42,577.10 : x
  2. Step 2: Convert to fraction form
    78,387.02/108,174.07 = 42,577.10/x
  3. Step 3: Cross multiply
    78,387.02x = 108,174.07 × 42,577.10
  4. Step 4: Simplify right side
    78,387.02x = 4,605,738,195.80
  5. Step 5: Solve for x
    x = 4,605,738,195.80/78,387.02
  6. Step 6: Final answer
    x = 58,756.39

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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.