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Finding the Fourth Proportional to 70,310.89, 97,028.85 and 38,479.51

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Solution

The fourth proportional to 70,310.89, 97,028.85 and 38,479.51 is: 53,101.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,310.89 : 97,028.85 = 38,479.51 : x
  2. Step 2: Convert to fraction form
    70,310.89/97,028.85 = 38,479.51/x
  3. Step 3: Cross multiply
    70,310.89x = 97,028.85 × 38,479.51
  4. Step 4: Simplify right side
    70,310.89x = 3,733,622,603.86
  5. Step 5: Solve for x
    x = 3,733,622,603.86/70,310.89
  6. Step 6: Final answer
    x = 53,101.63

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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.