Home / 66,239.40-91,433.84-39,381.77

Finding the Fourth Proportional to 66,239.40, 91,433.84 and 39,381.77

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Solution

The fourth proportional to 66,239.40, 91,433.84 and 39,381.77 is: 54,360.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,239.40 : 91,433.84 = 39,381.77 : x
  2. Step 2: Convert to fraction form
    66,239.40/91,433.84 = 39,381.77/x
  3. Step 3: Cross multiply
    66,239.40x = 91,433.84 × 39,381.77
  4. Step 4: Simplify right side
    66,239.40x = 3,600,826,342.38
  5. Step 5: Solve for x
    x = 3,600,826,342.38/66,239.40
  6. Step 6: Final answer
    x = 54,360.80

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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.