Home / 55,515.08-76,640.40-37,391.72

Finding the Fourth Proportional to 55,515.08, 76,640.40 and 37,391.72

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Solution

The fourth proportional to 55,515.08, 76,640.40 and 37,391.72 is: 51,620.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,515.08 : 76,640.40 = 37,391.72 : x
  2. Step 2: Convert to fraction form
    55,515.08/76,640.40 = 37,391.72/x
  3. Step 3: Cross multiply
    55,515.08x = 76,640.40 × 37,391.72
  4. Step 4: Simplify right side
    55,515.08x = 2,865,716,377.49
  5. Step 5: Solve for x
    x = 2,865,716,377.49/55,515.08
  6. Step 6: Final answer
    x = 51,620.50

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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.