Home / 84,405.72-126,561.86-34,520.84

Finding the Fourth Proportional to 84,405.72, 126,561.86 and 34,520.84

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Solution

The fourth proportional to 84,405.72, 126,561.86 and 34,520.84 is: 51,762.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,405.72 : 126,561.86 = 34,520.84 : x
  2. Step 2: Convert to fraction form
    84,405.72/126,561.86 = 34,520.84/x
  3. Step 3: Cross multiply
    84,405.72x = 126,561.86 × 34,520.84
  4. Step 4: Simplify right side
    84,405.72x = 4,369,021,719.16
  5. Step 5: Solve for x
    x = 4,369,021,719.16/84,405.72
  6. Step 6: Final answer
    x = 51,762.15

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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.