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Finding the Fourth Proportional to 70,291.15, 105,320.08 and 49,470.91

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Solution

The fourth proportional to 70,291.15, 105,320.08 and 49,470.91 is: 74,124.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,291.15 : 105,320.08 = 49,470.91 : x
  2. Step 2: Convert to fraction form
    70,291.15/105,320.08 = 49,470.91/x
  3. Step 3: Cross multiply
    70,291.15x = 105,320.08 × 49,470.91
  4. Step 4: Simplify right side
    70,291.15x = 5,210,280,198.87
  5. Step 5: Solve for x
    x = 5,210,280,198.87/70,291.15
  6. Step 6: Final answer
    x = 74,124.27

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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.