Home / 91,685.20-126,567.01-57,743.56

Finding the Fourth Proportional to 91,685.20, 126,567.01 and 57,743.56

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Solution

The fourth proportional to 91,685.20, 126,567.01 and 57,743.56 is: 79,712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,685.20 : 126,567.01 = 57,743.56 : x
  2. Step 2: Convert to fraction form
    91,685.20/126,567.01 = 57,743.56/x
  3. Step 3: Cross multiply
    91,685.20x = 126,567.01 × 57,743.56
  4. Step 4: Simplify right side
    91,685.20x = 7,308,429,285.57
  5. Step 5: Solve for x
    x = 7,308,429,285.57/91,685.20
  6. Step 6: Final answer
    x = 79,712.20

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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.