Home / 66,135.96-99,218.32-21,760.52

Finding the Fourth Proportional to 66,135.96, 99,218.32 and 21,760.52

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Solution

The fourth proportional to 66,135.96, 99,218.32 and 21,760.52 is: 32,645.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,135.96 : 99,218.32 = 21,760.52 : x
  2. Step 2: Convert to fraction form
    66,135.96/99,218.32 = 21,760.52/x
  3. Step 3: Cross multiply
    66,135.96x = 99,218.32 × 21,760.52
  4. Step 4: Simplify right side
    66,135.96x = 2,159,041,686.23
  5. Step 5: Solve for x
    x = 2,159,041,686.23/66,135.96
  6. Step 6: Final answer
    x = 32,645.50

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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.