Home / 85,751.05-128,670.45-40,823.18

Finding the Fourth Proportional to 85,751.05, 128,670.45 and 40,823.18

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Solution

The fourth proportional to 85,751.05, 128,670.45 and 40,823.18 is: 61,255.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,751.05 : 128,670.45 = 40,823.18 : x
  2. Step 2: Convert to fraction form
    85,751.05/128,670.45 = 40,823.18/x
  3. Step 3: Cross multiply
    85,751.05x = 128,670.45 × 40,823.18
  4. Step 4: Simplify right side
    85,751.05x = 5,252,737,109.62
  5. Step 5: Solve for x
    x = 5,252,737,109.62/85,751.05
  6. Step 6: Final answer
    x = 61,255.66

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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.