Home / 87,730.78-121,069.43-47,445.33

Finding the Fourth Proportional to 87,730.78, 121,069.43 and 47,445.33

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Solution

The fourth proportional to 87,730.78, 121,069.43 and 47,445.33 is: 65,475.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,730.78 : 121,069.43 = 47,445.33 : x
  2. Step 2: Convert to fraction form
    87,730.78/121,069.43 = 47,445.33/x
  3. Step 3: Cross multiply
    87,730.78x = 121,069.43 × 47,445.33
  4. Step 4: Simplify right side
    87,730.78x = 5,744,179,059.26
  5. Step 5: Solve for x
    x = 5,744,179,059.26/87,730.78
  6. Step 6: Final answer
    x = 65,475.07

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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.