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Finding the Fourth Proportional to 81,482.18, 112,445.03 and 45,672.18

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Solution

The fourth proportional to 81,482.18, 112,445.03 and 45,672.18 is: 63,027.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,482.18 : 112,445.03 = 45,672.18 : x
  2. Step 2: Convert to fraction form
    81,482.18/112,445.03 = 45,672.18/x
  3. Step 3: Cross multiply
    81,482.18x = 112,445.03 × 45,672.18
  4. Step 4: Simplify right side
    81,482.18x = 5,135,609,421.90
  5. Step 5: Solve for x
    x = 5,135,609,421.90/81,482.18
  6. Step 6: Final answer
    x = 63,027.40

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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.