Home / 78,348.07-117,568.80-28,432.06

Finding the Fourth Proportional to 78,348.07, 117,568.80 and 28,432.06

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Solution

The fourth proportional to 78,348.07, 117,568.80 and 28,432.06 is: 42,665.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,348.07 : 117,568.80 = 28,432.06 : x
  2. Step 2: Convert to fraction form
    78,348.07/117,568.80 = 28,432.06/x
  3. Step 3: Cross multiply
    78,348.07x = 117,568.80 × 28,432.06
  4. Step 4: Simplify right side
    78,348.07x = 3,342,723,175.73
  5. Step 5: Solve for x
    x = 3,342,723,175.73/78,348.07
  6. Step 6: Final answer
    x = 42,665.04

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1.5x scale

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.