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Finding the Fourth Proportional to 71,918.01, 99,250.22 and 40,087.14

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Solution

The fourth proportional to 71,918.01, 99,250.22 and 40,087.14 is: 55,322.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,918.01 : 99,250.22 = 40,087.14 : x
  2. Step 2: Convert to fraction form
    71,918.01/99,250.22 = 40,087.14/x
  3. Step 3: Cross multiply
    71,918.01x = 99,250.22 × 40,087.14
  4. Step 4: Simplify right side
    71,918.01x = 3,978,657,263.74
  5. Step 5: Solve for x
    x = 3,978,657,263.74/71,918.01
  6. Step 6: Final answer
    x = 55,322.13

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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.