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Finding the Fourth Proportional to 70,332.71, 105,426.14 and 43,976.93

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Solution

The fourth proportional to 70,332.71, 105,426.14 and 43,976.93 is: 65,919.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,332.71 : 105,426.14 = 43,976.93 : x
  2. Step 2: Convert to fraction form
    70,332.71/105,426.14 = 43,976.93/x
  3. Step 3: Cross multiply
    70,332.71x = 105,426.14 × 43,976.93
  4. Step 4: Simplify right side
    70,332.71x = 4,636,317,231.93
  5. Step 5: Solve for x
    x = 4,636,317,231.93/70,332.71
  6. Step 6: Final answer
    x = 65,919.79

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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.