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Finding the Fourth Proportional to 70,019.20, 96,634.80 and 39,809.08

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Solution

The fourth proportional to 70,019.20, 96,634.80 and 39,809.08 is: 54,941.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,019.20 : 96,634.80 = 39,809.08 : x
  2. Step 2: Convert to fraction form
    70,019.20/96,634.80 = 39,809.08/x
  3. Step 3: Cross multiply
    70,019.20x = 96,634.80 × 39,809.08
  4. Step 4: Simplify right side
    70,019.20x = 3,846,941,801.76
  5. Step 5: Solve for x
    x = 3,846,941,801.76/70,019.20
  6. Step 6: Final answer
    x = 54,941.25

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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.