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Finding the Fourth Proportional to 70,017.72, 96,620.64 and 39,798.84

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Solution

The fourth proportional to 70,017.72, 96,620.64 and 39,798.84 is: 54,920.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,017.72 : 96,620.64 = 39,798.84 : x
  2. Step 2: Convert to fraction form
    70,017.72/96,620.64 = 39,798.84/x
  3. Step 3: Cross multiply
    70,017.72x = 96,620.64 × 39,798.84
  4. Step 4: Simplify right side
    70,017.72x = 3,845,389,392.06
  5. Step 5: Solve for x
    x = 3,845,389,392.06/70,017.72
  6. Step 6: Final answer
    x = 54,920.23

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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.