Home / 78,385.56-108,172.90-42,576.26

Finding the Fourth Proportional to 78,385.56, 108,172.90 and 42,576.26

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Solution

The fourth proportional to 78,385.56, 108,172.90 and 42,576.26 is: 58,755.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,385.56 : 108,172.90 = 42,576.26 : x
  2. Step 2: Convert to fraction form
    78,385.56/108,172.90 = 42,576.26/x
  3. Step 3: Cross multiply
    78,385.56x = 108,172.90 × 42,576.26
  4. Step 4: Simplify right side
    78,385.56x = 4,605,597,515.35
  5. Step 5: Solve for x
    x = 4,605,597,515.35/78,385.56
  6. Step 6: Final answer
    x = 58,755.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.