Home / 87,856.75-121,242.38-47,570.54

Finding the Fourth Proportional to 87,856.75, 121,242.38 and 47,570.54

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Solution

The fourth proportional to 87,856.75, 121,242.38 and 47,570.54 is: 65,647.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.75 : 121,242.38 = 47,570.54 : x
  2. Step 2: Convert to fraction form
    87,856.75/121,242.38 = 47,570.54/x
  3. Step 3: Cross multiply
    87,856.75x = 121,242.38 × 47,570.54
  4. Step 4: Simplify right side
    87,856.75x = 5,767,564,643.42
  5. Step 5: Solve for x
    x = 5,767,564,643.42/87,856.75
  6. Step 6: Final answer
    x = 65,647.37

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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.