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Finding the Fourth Proportional to 78,313.74, 108,071.40 and 44,321.61

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Solution

The fourth proportional to 78,313.74, 108,071.40 and 44,321.61 is: 61,162.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,313.74 : 108,071.40 = 44,321.61 : x
  2. Step 2: Convert to fraction form
    78,313.74/108,071.40 = 44,321.61/x
  3. Step 3: Cross multiply
    78,313.74x = 108,071.40 × 44,321.61
  4. Step 4: Simplify right side
    78,313.74x = 4,789,898,040.25
  5. Step 5: Solve for x
    x = 4,789,898,040.25/78,313.74
  6. Step 6: Final answer
    x = 61,162.94

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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.