Home / 66,433.38-91,681.70-38,140.89

Finding the Fourth Proportional to 66,433.38, 91,681.70 and 38,140.89

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Solution

The fourth proportional to 66,433.38, 91,681.70 and 38,140.89 is: 52,636.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,433.38 : 91,681.70 = 38,140.89 : x
  2. Step 2: Convert to fraction form
    66,433.38/91,681.70 = 38,140.89/x
  3. Step 3: Cross multiply
    66,433.38x = 91,681.70 × 38,140.89
  4. Step 4: Simplify right side
    66,433.38x = 3,496,821,634.71
  5. Step 5: Solve for x
    x = 3,496,821,634.71/66,433.38
  6. Step 6: Final answer
    x = 52,636.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.