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Finding the Fourth Proportional to 65,455.80, 90,329.09 and 37,161.49

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Solution

The fourth proportional to 65,455.80, 90,329.09 and 37,161.49 is: 51,282.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,455.80 : 90,329.09 = 37,161.49 : x
  2. Step 2: Convert to fraction form
    65,455.80/90,329.09 = 37,161.49/x
  3. Step 3: Cross multiply
    65,455.80x = 90,329.09 × 37,161.49
  4. Step 4: Simplify right side
    65,455.80x = 3,356,763,574.74
  5. Step 5: Solve for x
    x = 3,356,763,574.74/65,455.80
  6. Step 6: Final answer
    x = 51,282.91

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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.