Home / 91,731.74-126,538.54-57,727.53

Finding the Fourth Proportional to 91,731.74, 126,538.54 and 57,727.53

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Solution

The fourth proportional to 91,731.74, 126,538.54 and 57,727.53 is: 79,631.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,731.74 : 126,538.54 = 57,727.53 : x
  2. Step 2: Convert to fraction form
    91,731.74/126,538.54 = 57,727.53/x
  3. Step 3: Cross multiply
    91,731.74x = 126,538.54 × 57,727.53
  4. Step 4: Simplify right side
    91,731.74x = 7,304,757,219.69
  5. Step 5: Solve for x
    x = 7,304,757,219.69/91,731.74
  6. Step 6: Final answer
    x = 79,631.74

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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.