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Finding the Fourth Proportional to 81,673.28, 112,703.00 and 45,856.46

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Solution

The fourth proportional to 81,673.28, 112,703.00 and 45,856.46 is: 63,278.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,673.28 : 112,703.00 = 45,856.46 : x
  2. Step 2: Convert to fraction form
    81,673.28/112,703.00 = 45,856.46/x
  3. Step 3: Cross multiply
    81,673.28x = 112,703.00 × 45,856.46
  4. Step 4: Simplify right side
    81,673.28x = 5,168,160,663.86
  5. Step 5: Solve for x
    x = 5,168,160,663.86/81,673.28
  6. Step 6: Final answer
    x = 63,278.48

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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.