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Finding the Fourth Proportional to 81,445.01, 112,392.70 and 45,634.91

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Solution

The fourth proportional to 81,445.01, 112,392.70 and 45,634.91 is: 62,975.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,445.01 : 112,392.70 = 45,634.91 : x
  2. Step 2: Convert to fraction form
    81,445.01/112,392.70 = 45,634.91/x
  3. Step 3: Cross multiply
    81,445.01x = 112,392.70 × 45,634.91
  4. Step 4: Simplify right side
    81,445.01x = 5,129,030,073.11
  5. Step 5: Solve for x
    x = 5,129,030,073.11/81,445.01
  6. Step 6: Final answer
    x = 62,975.38

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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.