Home / 91,424.43-126,243.59-57,489.71

Finding the Fourth Proportional to 91,424.43, 126,243.59 and 57,489.71

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Solution

The fourth proportional to 91,424.43, 126,243.59 and 57,489.71 is: 79,384.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,424.43 : 126,243.59 = 57,489.71 : x
  2. Step 2: Convert to fraction form
    91,424.43/126,243.59 = 57,489.71/x
  3. Step 3: Cross multiply
    91,424.43x = 126,243.59 × 57,489.71
  4. Step 4: Simplify right side
    91,424.43x = 7,257,706,459.79
  5. Step 5: Solve for x
    x = 7,257,706,459.79/91,424.43
  6. Step 6: Final answer
    x = 79,384.76

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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.