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Finding the Fourth Proportional to 66,141.87, 91,225.77 and 45,988.65

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Solution

The fourth proportional to 66,141.87, 91,225.77 and 45,988.65 is: 63,429.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,141.87 : 91,225.77 = 45,988.65 : x
  2. Step 2: Convert to fraction form
    66,141.87/91,225.77 = 45,988.65/x
  3. Step 3: Cross multiply
    66,141.87x = 91,225.77 × 45,988.65
  4. Step 4: Simplify right side
    66,141.87x = 4,195,350,007.51
  5. Step 5: Solve for x
    x = 4,195,350,007.51/66,141.87
  6. Step 6: Final answer
    x = 63,429.56

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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.