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Finding the Fourth Proportional to 80,437.78, 110,881.34 and 63,411.58

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Solution

The fourth proportional to 80,437.78, 110,881.34 and 63,411.58 is: 87,411.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,437.78 : 110,881.34 = 63,411.58 : x
  2. Step 2: Convert to fraction form
    80,437.78/110,881.34 = 63,411.58/x
  3. Step 3: Cross multiply
    80,437.78x = 110,881.34 × 63,411.58
  4. Step 4: Simplify right side
    80,437.78x = 7,031,160,961.92
  5. Step 5: Solve for x
    x = 7,031,160,961.92/80,437.78
  6. Step 6: Final answer
    x = 87,411.18

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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.