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Finding the Fourth Proportional to 66,152.70, 91,298.55 and 39,295.31

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Solution

The fourth proportional to 66,152.70, 91,298.55 and 39,295.31 is: 54,232.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,152.70 : 91,298.55 = 39,295.31 : x
  2. Step 2: Convert to fraction form
    66,152.70/91,298.55 = 39,295.31/x
  3. Step 3: Cross multiply
    66,152.70x = 91,298.55 × 39,295.31
  4. Step 4: Simplify right side
    66,152.70x = 3,587,604,628.32
  5. Step 5: Solve for x
    x = 3,587,604,628.32/66,152.70
  6. Step 6: Final answer
    x = 54,232.18

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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.