Home / 87,345.96-120,542.31-66,088.32

Finding the Fourth Proportional to 87,345.96, 120,542.31 and 66,088.32

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Solution

The fourth proportional to 87,345.96, 120,542.31 and 66,088.32 is: 91,205.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,345.96 : 120,542.31 = 66,088.32 : x
  2. Step 2: Convert to fraction form
    87,345.96/120,542.31 = 66,088.32/x
  3. Step 3: Cross multiply
    87,345.96x = 120,542.31 × 66,088.32
  4. Step 4: Simplify right side
    87,345.96x = 7,966,438,756.82
  5. Step 5: Solve for x
    x = 7,966,438,756.82/87,345.96
  6. Step 6: Final answer
    x = 91,205.58

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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.