Home / 78,375.49-108,158.39-42,566.11

Finding the Fourth Proportional to 78,375.49, 108,158.39 and 42,566.11

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Solution

The fourth proportional to 78,375.49, 108,158.39 and 42,566.11 is: 58,741.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,375.49 : 108,158.39 = 42,566.11 : x
  2. Step 2: Convert to fraction form
    78,375.49/108,158.39 = 42,566.11/x
  3. Step 3: Cross multiply
    78,375.49x = 108,158.39 × 42,566.11
  4. Step 4: Simplify right side
    78,375.49x = 4,603,881,926.16
  5. Step 5: Solve for x
    x = 4,603,881,926.16/78,375.49
  6. Step 6: Final answer
    x = 58,741.35

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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.