Home / 48,920.89-67,507-28,778.53

Finding the Fourth Proportional to 48,920.89, 67,507 and 28,778.53

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Solution

The fourth proportional to 48,920.89, 67,507 and 28,778.53 is: 39,712.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,920.89 : 67,507 = 28,778.53 : x
  2. Step 2: Convert to fraction form
    48,920.89/67,507 = 28,778.53/x
  3. Step 3: Cross multiply
    48,920.89x = 67,507 × 28,778.53
  4. Step 4: Simplify right side
    48,920.89x = 1,942,752,224.71
  5. Step 5: Solve for x
    x = 1,942,752,224.71/48,920.89
  6. Step 6: Final answer
    x = 39,712.12

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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.