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Finding the Fourth Proportional to 82,812.70, 114,281.40 and 45,086.92

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Solution

The fourth proportional to 82,812.70, 114,281.40 and 45,086.92 is: 62,219.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,812.70 : 114,281.40 = 45,086.92 : x
  2. Step 2: Convert to fraction form
    82,812.70/114,281.40 = 45,086.92/x
  3. Step 3: Cross multiply
    82,812.70x = 114,281.40 × 45,086.92
  4. Step 4: Simplify right side
    82,812.70x = 5,152,596,339.29
  5. Step 5: Solve for x
    x = 5,152,596,339.29/82,812.70
  6. Step 6: Final answer
    x = 62,219.88

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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.