Home / 87,651.16-121,038.27-66,104.00

Finding the Fourth Proportional to 87,651.16, 121,038.27 and 66,104.00

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Solution

The fourth proportional to 87,651.16, 121,038.27 and 66,104.00 is: 91,283.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,651.16 : 121,038.27 = 66,104.00 : x
  2. Step 2: Convert to fraction form
    87,651.16/121,038.27 = 66,104.00/x
  3. Step 3: Cross multiply
    87,651.16x = 121,038.27 × 66,104.00
  4. Step 4: Simplify right side
    87,651.16x = 8,001,112,864.37
  5. Step 5: Solve for x
    x = 8,001,112,864.37/87,651.16
  6. Step 6: Final answer
    x = 91,283.59

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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.