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Finding the Fourth Proportional to 66,612.05, 99,915.32 and 37,011

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Solution

The fourth proportional to 66,612.05, 99,915.32 and 37,011 is: 55,514.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,612.05 : 99,915.32 = 37,011 : x
  2. Step 2: Convert to fraction form
    66,612.05/99,915.32 = 37,011/x
  3. Step 3: Cross multiply
    66,612.05x = 99,915.32 × 37,011
  4. Step 4: Simplify right side
    66,612.05x = 3,697,966,001.05
  5. Step 5: Solve for x
    x = 3,697,966,001.05/66,612.05
  6. Step 6: Final answer
    x = 55,514.97

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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.