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Finding the Fourth Proportional to 81,580.90, 112,580.94 and 45,770.14

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Solution

The fourth proportional to 81,580.90, 112,580.94 and 45,770.14 is: 63,162.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,580.90 : 112,580.94 = 45,770.14 : x
  2. Step 2: Convert to fraction form
    81,580.90/112,580.94 = 45,770.14/x
  3. Step 3: Cross multiply
    81,580.90x = 112,580.94 × 45,770.14
  4. Step 4: Simplify right side
    81,580.90x = 5,152,845,385.13
  5. Step 5: Solve for x
    x = 5,152,845,385.13/81,580.90
  6. Step 6: Final answer
    x = 63,162.40

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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.