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Finding the Fourth Proportional to 81,603.29, 112,620.64 and 45,793.45

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Solution

The fourth proportional to 81,603.29, 112,620.64 and 45,793.45 is: 63,199.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,603.29 : 112,620.64 = 45,793.45 : x
  2. Step 2: Convert to fraction form
    81,603.29/112,620.64 = 45,793.45/x
  3. Step 3: Cross multiply
    81,603.29x = 112,620.64 × 45,793.45
  4. Step 4: Simplify right side
    81,603.29x = 5,157,286,854.74
  5. Step 5: Solve for x
    x = 5,157,286,854.74/81,603.29
  6. Step 6: Final answer
    x = 63,199.50

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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.