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Finding the Fourth Proportional to 81,607.46, 112,619.13 and 45,309.50

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Solution

The fourth proportional to 81,607.46, 112,619.13 and 45,309.50 is: 62,527.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,607.46 : 112,619.13 = 45,309.50 : x
  2. Step 2: Convert to fraction form
    81,607.46/112,619.13 = 45,309.50/x
  3. Step 3: Cross multiply
    81,607.46x = 112,619.13 × 45,309.50
  4. Step 4: Simplify right side
    81,607.46x = 5,102,716,470.74
  5. Step 5: Solve for x
    x = 5,102,716,470.74/81,607.46
  6. Step 6: Final answer
    x = 62,527.57

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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.