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Finding the Fourth Proportional to 66,245.31, 91,280.12 and 44,987.67

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Solution

The fourth proportional to 66,245.31, 91,280.12 and 44,987.67 is: 61,988.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,245.31 : 91,280.12 = 44,987.67 : x
  2. Step 2: Convert to fraction form
    66,245.31/91,280.12 = 44,987.67/x
  3. Step 3: Cross multiply
    66,245.31x = 91,280.12 × 44,987.67
  4. Step 4: Simplify right side
    66,245.31x = 4,106,479,691.18
  5. Step 5: Solve for x
    x = 4,106,479,691.18/66,245.31
  6. Step 6: Final answer
    x = 61,988.99

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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.