Home / 78,349.12-117,570.37-28,433.11

Finding the Fourth Proportional to 78,349.12, 117,570.37 and 28,433.11

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Solution

The fourth proportional to 78,349.12, 117,570.37 and 28,433.11 is: 42,666.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,349.12 : 117,570.37 = 28,433.11 : x
  2. Step 2: Convert to fraction form
    78,349.12/117,570.37 = 28,433.11/x
  3. Step 3: Cross multiply
    78,349.12x = 117,570.37 × 28,433.11
  4. Step 4: Simplify right side
    78,349.12x = 3,342,891,262.95
  5. Step 5: Solve for x
    x = 3,342,891,262.95/78,349.12
  6. Step 6: Final answer
    x = 42,666.61

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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.