Home / 66,547.11-99,825.45-20,950.90

Finding the Fourth Proportional to 66,547.11, 99,825.45 and 20,950.90

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Solution

The fourth proportional to 66,547.11, 99,825.45 and 20,950.90 is: 31,427.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,547.11 : 99,825.45 = 20,950.90 : x
  2. Step 2: Convert to fraction form
    66,547.11/99,825.45 = 20,950.90/x
  3. Step 3: Cross multiply
    66,547.11x = 99,825.45 × 20,950.90
  4. Step 4: Simplify right side
    66,547.11x = 2,091,433,020.41
  5. Step 5: Solve for x
    x = 2,091,433,020.41/66,547.11
  6. Step 6: Final answer
    x = 31,427.86

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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.