Home / 66,436.08-91,680.60-36,222.72

Finding the Fourth Proportional to 66,436.08, 91,680.60 and 36,222.72

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Solution

The fourth proportional to 66,436.08, 91,680.60 and 36,222.72 is: 49,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,436.08 : 91,680.60 = 36,222.72 : x
  2. Step 2: Convert to fraction form
    66,436.08/91,680.60 = 36,222.72/x
  3. Step 3: Cross multiply
    66,436.08x = 91,680.60 × 36,222.72
  4. Step 4: Simplify right side
    66,436.08x = 3,320,920,703.23
  5. Step 5: Solve for x
    x = 3,320,920,703.23/66,436.08
  6. Step 6: Final answer
    x = 49,986.70

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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.