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Finding the Fourth Proportional to 66,599.58, 99,899 and 27,156.54

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Solution

The fourth proportional to 66,599.58, 99,899 and 27,156.54 is: 40,734.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,599.58 : 99,899 = 27,156.54 : x
  2. Step 2: Convert to fraction form
    66,599.58/99,899 = 27,156.54/x
  3. Step 3: Cross multiply
    66,599.58x = 99,899 × 27,156.54
  4. Step 4: Simplify right side
    66,599.58x = 2,712,911,189.46
  5. Step 5: Solve for x
    x = 2,712,911,189.46/66,599.58
  6. Step 6: Final answer
    x = 40,734.66

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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.