Home / 51,971.68-77,986.75-28,280.95

Finding the Fourth Proportional to 51,971.68, 77,986.75 and 28,280.95

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Solution

The fourth proportional to 51,971.68, 77,986.75 and 28,280.95 is: 42,437.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,971.68 : 77,986.75 = 28,280.95 : x
  2. Step 2: Convert to fraction form
    51,971.68/77,986.75 = 28,280.95/x
  3. Step 3: Cross multiply
    51,971.68x = 77,986.75 × 28,280.95
  4. Step 4: Simplify right side
    51,971.68x = 2,205,539,377.41
  5. Step 5: Solve for x
    x = 2,205,539,377.41/51,971.68
  6. Step 6: Final answer
    x = 42,437.33

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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.