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Finding the Fourth Proportional to 81,206.76, 112,066.16 and 45,398.76

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Solution

The fourth proportional to 81,206.76, 112,066.16 and 45,398.76 is: 62,650.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,206.76 : 112,066.16 = 45,398.76 : x
  2. Step 2: Convert to fraction form
    81,206.76/112,066.16 = 45,398.76/x
  3. Step 3: Cross multiply
    81,206.76x = 112,066.16 × 45,398.76
  4. Step 4: Simplify right side
    81,206.76x = 5,087,664,701.96
  5. Step 5: Solve for x
    x = 5,087,664,701.96/81,206.76
  6. Step 6: Final answer
    x = 62,650.75

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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.