Home / 78,075.11-107,743.14-42,264.33

Finding the Fourth Proportional to 78,075.11, 107,743.14 and 42,264.33

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Solution

The fourth proportional to 78,075.11, 107,743.14 and 42,264.33 is: 58,324.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,075.11 : 107,743.14 = 42,264.33 : x
  2. Step 2: Convert to fraction form
    78,075.11/107,743.14 = 42,264.33/x
  3. Step 3: Cross multiply
    78,075.11x = 107,743.14 × 42,264.33
  4. Step 4: Simplify right side
    78,075.11x = 4,553,691,624.20
  5. Step 5: Solve for x
    x = 4,553,691,624.20/78,075.11
  6. Step 6: Final answer
    x = 58,324.50

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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.