Home / 71,218.95-98,284.05-39,389.01

Finding the Fourth Proportional to 71,218.95, 98,284.05 and 39,389.01

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Solution

The fourth proportional to 71,218.95, 98,284.05 and 39,389.01 is: 54,357.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,218.95 : 98,284.05 = 39,389.01 : x
  2. Step 2: Convert to fraction form
    71,218.95/98,284.05 = 39,389.01/x
  3. Step 3: Cross multiply
    71,218.95x = 98,284.05 × 39,389.01
  4. Step 4: Simplify right side
    71,218.95x = 3,871,311,428.29
  5. Step 5: Solve for x
    x = 3,871,311,428.29/71,218.95
  6. Step 6: Final answer
    x = 54,357.88

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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.