Home / 40,678.75-61,111.47-28,861.66

Finding the Fourth Proportional to 40,678.75, 61,111.47 and 28,861.66

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Solution

The fourth proportional to 40,678.75, 61,111.47 and 28,861.66 is: 43,358.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,678.75 : 61,111.47 = 28,861.66 : x
  2. Step 2: Convert to fraction form
    40,678.75/61,111.47 = 28,861.66/x
  3. Step 3: Cross multiply
    40,678.75x = 61,111.47 × 28,861.66
  4. Step 4: Simplify right side
    40,678.75x = 1,763,778,469.24
  5. Step 5: Solve for x
    x = 1,763,778,469.24/40,678.75
  6. Step 6: Final answer
    x = 43,358.72

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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.