Home / 66,465.75-99,711.20-21,499.18

Finding the Fourth Proportional to 66,465.75, 99,711.20 and 21,499.18

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Solution

The fourth proportional to 66,465.75, 99,711.20 and 21,499.18 is: 32,252.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,465.75 : 99,711.20 = 21,499.18 : x
  2. Step 2: Convert to fraction form
    66,465.75/99,711.20 = 21,499.18/x
  3. Step 3: Cross multiply
    66,465.75x = 99,711.20 × 21,499.18
  4. Step 4: Simplify right side
    66,465.75x = 2,143,709,036.82
  5. Step 5: Solve for x
    x = 2,143,709,036.82/66,465.75
  6. Step 6: Final answer
    x = 32,252.84

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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.