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Finding the Fourth Proportional to 81,577.90, 112,576.80 and 45,767.14

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Solution

The fourth proportional to 81,577.90, 112,576.80 and 45,767.14 is: 63,158.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,577.90 : 112,576.80 = 45,767.14 : x
  2. Step 2: Convert to fraction form
    81,577.90/112,576.80 = 45,767.14/x
  3. Step 3: Cross multiply
    81,577.90x = 112,576.80 × 45,767.14
  4. Step 4: Simplify right side
    81,577.90x = 5,152,318,166.35
  5. Step 5: Solve for x
    x = 5,152,318,166.35/81,577.90
  6. Step 6: Final answer
    x = 63,158.26

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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.