Home / 66,421.18-99,653.31-39,763.02

Finding the Fourth Proportional to 66,421.18, 99,653.31 and 39,763.02

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Solution

The fourth proportional to 66,421.18, 99,653.31 and 39,763.02 is: 59,657.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,421.18 : 99,653.31 = 39,763.02 : x
  2. Step 2: Convert to fraction form
    66,421.18/99,653.31 = 39,763.02/x
  3. Step 3: Cross multiply
    66,421.18x = 99,653.31 × 39,763.02
  4. Step 4: Simplify right side
    66,421.18x = 3,962,515,960.92
  5. Step 5: Solve for x
    x = 3,962,515,960.92/66,421.18
  6. Step 6: Final answer
    x = 59,657.42

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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.