Home / 66,139.29-91,272.38-39,282.93

Finding the Fourth Proportional to 66,139.29, 91,272.38 and 39,282.93

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Solution

The fourth proportional to 66,139.29, 91,272.38 and 39,282.93 is: 54,210.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,139.29 : 91,272.38 = 39,282.93 : x
  2. Step 2: Convert to fraction form
    66,139.29/91,272.38 = 39,282.93/x
  3. Step 3: Cross multiply
    66,139.29x = 91,272.38 × 39,282.93
  4. Step 4: Simplify right side
    66,139.29x = 3,585,446,318.06
  5. Step 5: Solve for x
    x = 3,585,446,318.06/66,139.29
  6. Step 6: Final answer
    x = 54,210.54

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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.