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Finding the Fourth Proportional to 70,044.80, 96,661.37 and 39,830.12

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Solution

The fourth proportional to 70,044.80, 96,661.37 and 39,830.12 is: 54,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,044.80 : 96,661.37 = 39,830.12 : x
  2. Step 2: Convert to fraction form
    70,044.80/96,661.37 = 39,830.12/x
  3. Step 3: Cross multiply
    70,044.80x = 96,661.37 × 39,830.12
  4. Step 4: Simplify right side
    70,044.80x = 3,850,033,284.01
  5. Step 5: Solve for x
    x = 3,850,033,284.01/70,044.80
  6. Step 6: Final answer
    x = 54,965.30

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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.