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Finding the Fourth Proportional to 76,129.96, 105,062.96 and 43,869.40

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Solution

The fourth proportional to 76,129.96, 105,062.96 and 43,869.40 is: 60,541.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,129.96 : 105,062.96 = 43,869.40 : x
  2. Step 2: Convert to fraction form
    76,129.96/105,062.96 = 43,869.40/x
  3. Step 3: Cross multiply
    76,129.96x = 105,062.96 × 43,869.40
  4. Step 4: Simplify right side
    76,129.96x = 4,609,049,033.12
  5. Step 5: Solve for x
    x = 4,609,049,033.12/76,129.96
  6. Step 6: Final answer
    x = 60,541.85

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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.