Home / 66,343.12-91,555.76-36,128.95

Finding the Fourth Proportional to 66,343.12, 91,555.76 and 36,128.95

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Solution

The fourth proportional to 66,343.12, 91,555.76 and 36,128.95 is: 49,859.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,343.12 : 91,555.76 = 36,128.95 : x
  2. Step 2: Convert to fraction form
    66,343.12/91,555.76 = 36,128.95/x
  3. Step 3: Cross multiply
    66,343.12x = 91,555.76 × 36,128.95
  4. Step 4: Simplify right side
    66,343.12x = 3,307,813,336.68
  5. Step 5: Solve for x
    x = 3,307,813,336.68/66,343.12
  6. Step 6: Final answer
    x = 49,859.18

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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.