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Finding the Fourth Proportional to 81,798.35, 112,884.98 and 45,988.25

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Solution

The fourth proportional to 81,798.35, 112,884.98 and 45,988.25 is: 63,465.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,798.35 : 112,884.98 = 45,988.25 : x
  2. Step 2: Convert to fraction form
    81,798.35/112,884.98 = 45,988.25/x
  3. Step 3: Cross multiply
    81,798.35x = 112,884.98 × 45,988.25
  4. Step 4: Simplify right side
    81,798.35x = 5,191,381,887.12
  5. Step 5: Solve for x
    x = 5,191,381,887.12/81,798.35
  6. Step 6: Final answer
    x = 63,465.61

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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.