Home / 78,452.07-117,641.15-28,496.94

Finding the Fourth Proportional to 78,452.07, 117,641.15 and 28,496.94

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Solution

The fourth proportional to 78,452.07, 117,641.15 and 28,496.94 is: 42,731.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,452.07 : 117,641.15 = 28,496.94 : x
  2. Step 2: Convert to fraction form
    78,452.07/117,641.15 = 28,496.94/x
  3. Step 3: Cross multiply
    78,452.07x = 117,641.15 × 28,496.94
  4. Step 4: Simplify right side
    78,452.07x = 3,352,412,650.60
  5. Step 5: Solve for x
    x = 3,352,412,650.60/78,452.07
  6. Step 6: Final answer
    x = 42,731.98

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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.