Home / 87,750.96-121,007.88-66,293.52

Finding the Fourth Proportional to 87,750.96, 121,007.88 and 66,293.52

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Solution

The fourth proportional to 87,750.96, 121,007.88 and 66,293.52 is: 91,418.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,750.96 : 121,007.88 = 66,293.52 : x
  2. Step 2: Convert to fraction form
    87,750.96/121,007.88 = 66,293.52/x
  3. Step 3: Cross multiply
    87,750.96x = 121,007.88 × 66,293.52
  4. Step 4: Simplify right side
    87,750.96x = 8,022,038,312.94
  5. Step 5: Solve for x
    x = 8,022,038,312.94/87,750.96
  6. Step 6: Final answer
    x = 91,418.24

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1.5x scale

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.