Home / 66,589.85-91,870.08-39,360.19

Finding the Fourth Proportional to 66,589.85, 91,870.08 and 39,360.19

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Solution

The fourth proportional to 66,589.85, 91,870.08 and 39,360.19 is: 54,302.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,589.85 : 91,870.08 = 39,360.19 : x
  2. Step 2: Convert to fraction form
    66,589.85/91,870.08 = 39,360.19/x
  3. Step 3: Cross multiply
    66,589.85x = 91,870.08 × 39,360.19
  4. Step 4: Simplify right side
    66,589.85x = 3,616,023,804.12
  5. Step 5: Solve for x
    x = 3,616,023,804.12/66,589.85
  6. Step 6: Final answer
    x = 54,302.93

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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.