Home / 66,220.20-91,381.86-36,005.58

Finding the Fourth Proportional to 66,220.20, 91,381.86 and 36,005.58

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Solution

The fourth proportional to 66,220.20, 91,381.86 and 36,005.58 is: 49,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,220.20 : 91,381.86 = 36,005.58 : x
  2. Step 2: Convert to fraction form
    66,220.20/91,381.86 = 36,005.58/x
  3. Step 3: Cross multiply
    66,220.20x = 91,381.86 × 36,005.58
  4. Step 4: Simplify right side
    66,220.20x = 3,290,256,870.78
  5. Step 5: Solve for x
    x = 3,290,256,870.78/66,220.20
  6. Step 6: Final answer
    x = 49,686.60

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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.