Home / 68,400.12-102,555.77-28,408.13

Finding the Fourth Proportional to 68,400.12, 102,555.77 and 28,408.13

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Solution

The fourth proportional to 68,400.12, 102,555.77 and 28,408.13 is: 42,593.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,400.12 : 102,555.77 = 28,408.13 : x
  2. Step 2: Convert to fraction form
    68,400.12/102,555.77 = 28,408.13/x
  3. Step 3: Cross multiply
    68,400.12x = 102,555.77 × 28,408.13
  4. Step 4: Simplify right side
    68,400.12x = 2,913,417,535.97
  5. Step 5: Solve for x
    x = 2,913,417,535.97/68,400.12
  6. Step 6: Final answer
    x = 42,593.75

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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.