Home / 91,789.47-137,556.05-49,578.55

Finding the Fourth Proportional to 91,789.47, 137,556.05 and 49,578.55

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Solution

The fourth proportional to 91,789.47, 137,556.05 and 49,578.55 is: 74,298.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,789.47 : 137,556.05 = 49,578.55 : x
  2. Step 2: Convert to fraction form
    91,789.47/137,556.05 = 49,578.55/x
  3. Step 3: Cross multiply
    91,789.47x = 137,556.05 × 49,578.55
  4. Step 4: Simplify right side
    91,789.47x = 6,819,828,814.95
  5. Step 5: Solve for x
    x = 6,819,828,814.95/91,789.47
  6. Step 6: Final answer
    x = 74,298.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.