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Finding the Fourth Proportional to 78,555.68, 117,841.72 and 25,234.20

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Solution

The fourth proportional to 78,555.68, 117,841.72 and 25,234.20 is: 37,853.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,555.68 : 117,841.72 = 25,234.20 : x
  2. Step 2: Convert to fraction form
    78,555.68/117,841.72 = 25,234.20/x
  3. Step 3: Cross multiply
    78,555.68x = 117,841.72 × 25,234.20
  4. Step 4: Simplify right side
    78,555.68x = 2,973,641,530.82
  5. Step 5: Solve for x
    x = 2,973,641,530.82/78,555.68
  6. Step 6: Final answer
    x = 37,853.93

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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.