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Finding the Fourth Proportional to 70,091.88, 96,728.10 and 38,261.91

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Solution

The fourth proportional to 70,091.88, 96,728.10 and 38,261.91 is: 52,802.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,091.88 : 96,728.10 = 38,261.91 : x
  2. Step 2: Convert to fraction form
    70,091.88/96,728.10 = 38,261.91/x
  3. Step 3: Cross multiply
    70,091.88x = 96,728.10 × 38,261.91
  4. Step 4: Simplify right side
    70,091.88x = 3,701,001,856.67
  5. Step 5: Solve for x
    x = 3,701,001,856.67/70,091.88
  6. Step 6: Final answer
    x = 52,802.15

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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.