Home / 78,543.32-117,818.87-22,391.70

Finding the Fourth Proportional to 78,543.32, 117,818.87 and 22,391.70

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Solution

The fourth proportional to 78,543.32, 117,818.87 and 22,391.70 is: 33,588.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,543.32 : 117,818.87 = 22,391.70 : x
  2. Step 2: Convert to fraction form
    78,543.32/117,818.87 = 22,391.70/x
  3. Step 3: Cross multiply
    78,543.32x = 117,818.87 × 22,391.70
  4. Step 4: Simplify right side
    78,543.32x = 2,638,165,089.26
  5. Step 5: Solve for x
    x = 2,638,165,089.26/78,543.32
  6. Step 6: Final answer
    x = 33,588.66

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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.