Home / 66,206.78-91,386.27-42,333.56

Finding the Fourth Proportional to 66,206.78, 91,386.27 and 42,333.56

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Solution

The fourth proportional to 66,206.78, 91,386.27 and 42,333.56 is: 58,433.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,206.78 : 91,386.27 = 42,333.56 : x
  2. Step 2: Convert to fraction form
    66,206.78/91,386.27 = 42,333.56/x
  3. Step 3: Cross multiply
    66,206.78x = 91,386.27 × 42,333.56
  4. Step 4: Simplify right side
    66,206.78x = 3,868,705,687.29
  5. Step 5: Solve for x
    x = 3,868,705,687.29/66,206.78
  6. Step 6: Final answer
    x = 58,433.68

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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.