Home / 91,172.28-125,700.78-74,759.01

Finding the Fourth Proportional to 91,172.28, 125,700.78 and 74,759.01

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Solution

The fourth proportional to 91,172.28, 125,700.78 and 74,759.01 is: 103,071.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,172.28 : 125,700.78 = 74,759.01 : x
  2. Step 2: Convert to fraction form
    91,172.28/125,700.78 = 74,759.01/x
  3. Step 3: Cross multiply
    91,172.28x = 125,700.78 × 74,759.01
  4. Step 4: Simplify right side
    91,172.28x = 9,397,265,869.03
  5. Step 5: Solve for x
    x = 9,397,265,869.03/91,172.28
  6. Step 6: Final answer
    x = 103,071.52

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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.