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Finding the Fourth Proportional to 73,812.84, 101,862 and 40,278.84

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Solution

The fourth proportional to 73,812.84, 101,862 and 40,278.84 is: 55,584.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,812.84 : 101,862 = 40,278.84 : x
  2. Step 2: Convert to fraction form
    73,812.84/101,862 = 40,278.84/x
  3. Step 3: Cross multiply
    73,812.84x = 101,862 × 40,278.84
  4. Step 4: Simplify right side
    73,812.84x = 4,102,883,200.08
  5. Step 5: Solve for x
    x = 4,102,883,200.08/73,812.84
  6. Step 6: Final answer
    x = 55,584.95

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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.