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Finding the Fourth Proportional to 70,661.88, 97,513.41 and 38,830.80

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Solution

The fourth proportional to 70,661.88, 97,513.41 and 38,830.80 is: 53,586.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,661.88 : 97,513.41 = 38,830.80 : x
  2. Step 2: Convert to fraction form
    70,661.88/97,513.41 = 38,830.80/x
  3. Step 3: Cross multiply
    70,661.88x = 97,513.41 × 38,830.80
  4. Step 4: Simplify right side
    70,661.88x = 3,786,523,721.03
  5. Step 5: Solve for x
    x = 3,786,523,721.03/70,661.88
  6. Step 6: Final answer
    x = 53,586.51

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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.