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Finding the Fourth Proportional to 66,698.28, 99,621.45 and 60,363.48

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Solution

The fourth proportional to 66,698.28, 99,621.45 and 60,363.48 is: 90,159.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,698.28 : 99,621.45 = 60,363.48 : x
  2. Step 2: Convert to fraction form
    66,698.28/99,621.45 = 60,363.48/x
  3. Step 3: Cross multiply
    66,698.28x = 99,621.45 × 60,363.48
  4. Step 4: Simplify right side
    66,698.28x = 6,013,497,404.65
  5. Step 5: Solve for x
    x = 6,013,497,404.65/66,698.28
  6. Step 6: Final answer
    x = 90,159.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.