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Finding the Fourth Proportional to 66,888.49, 100,349.48 and 47,205.49

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Solution

The fourth proportional to 66,888.49, 100,349.48 and 47,205.49 is: 70,820.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,888.49 : 100,349.48 = 47,205.49 : x
  2. Step 2: Convert to fraction form
    66,888.49/100,349.48 = 47,205.49/x
  3. Step 3: Cross multiply
    66,888.49x = 100,349.48 × 47,205.49
  4. Step 4: Simplify right side
    66,888.49x = 4,737,046,374.65
  5. Step 5: Solve for x
    x = 4,737,046,374.65/66,888.49
  6. Step 6: Final answer
    x = 70,820.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.