Home / 65,998.12-98,998.80-21,665.20

Finding the Fourth Proportional to 65,998.12, 98,998.80 and 21,665.20

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Solution

The fourth proportional to 65,998.12, 98,998.80 and 21,665.20 is: 32,498.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,998.12 : 98,998.80 = 21,665.20 : x
  2. Step 2: Convert to fraction form
    65,998.12/98,998.80 = 21,665.20/x
  3. Step 3: Cross multiply
    65,998.12x = 98,998.80 × 21,665.20
  4. Step 4: Simplify right side
    65,998.12x = 2,144,828,801.76
  5. Step 5: Solve for x
    x = 2,144,828,801.76/65,998.12
  6. Step 6: Final answer
    x = 32,498.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.