Home / 87,938.08-121,515.48-64,023.24

Finding the Fourth Proportional to 87,938.08, 121,515.48 and 64,023.24

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Solution

The fourth proportional to 87,938.08, 121,515.48 and 64,023.24 is: 88,469.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,938.08 : 121,515.48 = 64,023.24 : x
  2. Step 2: Convert to fraction form
    87,938.08/121,515.48 = 64,023.24/x
  3. Step 3: Cross multiply
    87,938.08x = 121,515.48 × 64,023.24
  4. Step 4: Simplify right side
    87,938.08x = 7,779,814,739.76
  5. Step 5: Solve for x
    x = 7,779,814,739.76/87,938.08
  6. Step 6: Final answer
    x = 88,469.24

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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.