Home / 105,077.92-145,008-57,332.26

Finding the Fourth Proportional to 105,077.92, 145,008 and 57,332.26

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Solution

The fourth proportional to 105,077.92, 145,008 and 57,332.26 is: 79,118.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,077.92 : 145,008 = 57,332.26 : x
  2. Step 2: Convert to fraction form
    105,077.92/145,008 = 57,332.26/x
  3. Step 3: Cross multiply
    105,077.92x = 145,008 × 57,332.26
  4. Step 4: Simplify right side
    105,077.92x = 8,313,636,358.08
  5. Step 5: Solve for x
    x = 8,313,636,358.08/105,077.92
  6. Step 6: Final answer
    x = 79,118.78

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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.