Home / 66,438.80-99,685.08-26,985.68

Finding the Fourth Proportional to 66,438.80, 99,685.08 and 26,985.68

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Solution

The fourth proportional to 66,438.80, 99,685.08 and 26,985.68 is: 40,489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,438.80 : 99,685.08 = 26,985.68 : x
  2. Step 2: Convert to fraction form
    66,438.80/99,685.08 = 26,985.68/x
  3. Step 3: Cross multiply
    66,438.80x = 99,685.08 × 26,985.68
  4. Step 4: Simplify right side
    66,438.80x = 2,690,069,669.65
  5. Step 5: Solve for x
    x = 2,690,069,669.65/66,438.80
  6. Step 6: Final answer
    x = 40,489.44

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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.