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Finding the Fourth Proportional to 71,953.68, 99,288.84 and 40,119.60

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Solution

The fourth proportional to 71,953.68, 99,288.84 and 40,119.60 is: 55,361.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,953.68 : 99,288.84 = 40,119.60 : x
  2. Step 2: Convert to fraction form
    71,953.68/99,288.84 = 40,119.60/x
  3. Step 3: Cross multiply
    71,953.68x = 99,288.84 × 40,119.60
  4. Step 4: Simplify right side
    71,953.68x = 3,983,428,545.26
  5. Step 5: Solve for x
    x = 3,983,428,545.26/71,953.68
  6. Step 6: Final answer
    x = 55,361.01

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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.