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Finding the Fourth Proportional to 66,149.34, 91,019.34 and 64,574.70

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Solution

The fourth proportional to 66,149.34, 91,019.34 and 64,574.70 is: 88,852.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,149.34 : 91,019.34 = 64,574.70 : x
  2. Step 2: Convert to fraction form
    66,149.34/91,019.34 = 64,574.70/x
  3. Step 3: Cross multiply
    66,149.34x = 91,019.34 × 64,574.70
  4. Step 4: Simplify right side
    66,149.34x = 5,877,546,574.70
  5. Step 5: Solve for x
    x = 5,877,546,574.70/66,149.34
  6. Step 6: Final answer
    x = 88,852.69

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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.