Home / 87,870.78-121,263.75-50,148.54

Finding the Fourth Proportional to 87,870.78, 121,263.75 and 50,148.54

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Solution

The fourth proportional to 87,870.78, 121,263.75 and 50,148.54 is: 69,206.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,870.78 : 121,263.75 = 50,148.54 : x
  2. Step 2: Convert to fraction form
    87,870.78/121,263.75 = 50,148.54/x
  3. Step 3: Cross multiply
    87,870.78x = 121,263.75 × 50,148.54
  4. Step 4: Simplify right side
    87,870.78x = 6,081,200,017.43
  5. Step 5: Solve for x
    x = 6,081,200,017.43/87,870.78
  6. Step 6: Final answer
    x = 69,206.17

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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.