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Finding the Fourth Proportional to 81,254.88, 112,131.99 and 45,445.50

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Solution

The fourth proportional to 81,254.88, 112,131.99 and 45,445.50 is: 62,714.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,254.88 : 112,131.99 = 45,445.50 : x
  2. Step 2: Convert to fraction form
    81,254.88/112,131.99 = 45,445.50/x
  3. Step 3: Cross multiply
    81,254.88x = 112,131.99 × 45,445.50
  4. Step 4: Simplify right side
    81,254.88x = 5,095,894,351.55
  5. Step 5: Solve for x
    x = 5,095,894,351.55/81,254.88
  6. Step 6: Final answer
    x = 62,714.93

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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.