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Finding the Fourth Proportional to 70,404.65, 105,828.41 and 61,159.79

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Solution

The fourth proportional to 70,404.65, 105,828.41 and 61,159.79 is: 91,932.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,404.65 : 105,828.41 = 61,159.79 : x
  2. Step 2: Convert to fraction form
    70,404.65/105,828.41 = 61,159.79/x
  3. Step 3: Cross multiply
    70,404.65x = 105,828.41 × 61,159.79
  4. Step 4: Simplify right side
    70,404.65x = 6,472,443,405.08
  5. Step 5: Solve for x
    x = 6,472,443,405.08/70,404.65
  6. Step 6: Final answer
    x = 91,932.05

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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.