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Finding the Fourth Proportional to 70,578.88, 97,401.36 and 38,750.20

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Solution

The fourth proportional to 70,578.88, 97,401.36 and 38,750.20 is: 53,476.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,578.88 : 97,401.36 = 38,750.20 : x
  2. Step 2: Convert to fraction form
    70,578.88/97,401.36 = 38,750.20/x
  3. Step 3: Cross multiply
    70,578.88x = 97,401.36 × 38,750.20
  4. Step 4: Simplify right side
    70,578.88x = 3,774,322,180.27
  5. Step 5: Solve for x
    x = 3,774,322,180.27/70,578.88
  6. Step 6: Final answer
    x = 53,476.65

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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.