Home / 80,741.78-111,550.06-61,688.25

Finding the Fourth Proportional to 80,741.78, 111,550.06 and 61,688.25

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Solution

The fourth proportional to 80,741.78, 111,550.06 and 61,688.25 is: 85,226.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,741.78 : 111,550.06 = 61,688.25 : x
  2. Step 2: Convert to fraction form
    80,741.78/111,550.06 = 61,688.25/x
  3. Step 3: Cross multiply
    80,741.78x = 111,550.06 × 61,688.25
  4. Step 4: Simplify right side
    80,741.78x = 6,881,328,065.91
  5. Step 5: Solve for x
    x = 6,881,328,065.91/80,741.78
  6. Step 6: Final answer
    x = 85,226.36

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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.