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Finding the Fourth Proportional to 76,562.56, 105,660.80 and 43,030.72

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Solution

The fourth proportional to 76,562.56, 105,660.80 and 43,030.72 is: 59,384.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,562.56 : 105,660.80 = 43,030.72 : x
  2. Step 2: Convert to fraction form
    76,562.56/105,660.80 = 43,030.72/x
  3. Step 3: Cross multiply
    76,562.56x = 105,660.80 × 43,030.72
  4. Step 4: Simplify right side
    76,562.56x = 4,546,660,299.78
  5. Step 5: Solve for x
    x = 4,546,660,299.78/76,562.56
  6. Step 6: Final answer
    x = 59,384.90

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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.