Home / 78,534.58-117,732.15-28,605.37

Finding the Fourth Proportional to 78,534.58, 117,732.15 and 28,605.37

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Solution

The fourth proportional to 78,534.58, 117,732.15 and 28,605.37 is: 42,882.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,534.58 : 117,732.15 = 28,605.37 : x
  2. Step 2: Convert to fraction form
    78,534.58/117,732.15 = 28,605.37/x
  3. Step 3: Cross multiply
    78,534.58x = 117,732.15 × 28,605.37
  4. Step 4: Simplify right side
    78,534.58x = 3,367,771,417.32
  5. Step 5: Solve for x
    x = 3,367,771,417.32/78,534.58
  6. Step 6: Final answer
    x = 42,882.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.