Home / 78,371.20-108,151.27-42,561.46

Finding the Fourth Proportional to 78,371.20, 108,151.27 and 42,561.46

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Solution

The fourth proportional to 78,371.20, 108,151.27 and 42,561.46 is: 58,734.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,371.20 : 108,151.27 = 42,561.46 : x
  2. Step 2: Convert to fraction form
    78,371.20/108,151.27 = 42,561.46/x
  3. Step 3: Cross multiply
    78,371.20x = 108,151.27 × 42,561.46
  4. Step 4: Simplify right side
    78,371.20x = 4,603,075,952.05
  5. Step 5: Solve for x
    x = 4,603,075,952.05/78,371.20
  6. Step 6: Final answer
    x = 58,734.28

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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.