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Finding the Fourth Proportional to 70,736.09, 97,612.17 and 38,898.86

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Solution

The fourth proportional to 70,736.09, 97,612.17 and 38,898.86 is: 53,678.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,736.09 : 97,612.17 = 38,898.86 : x
  2. Step 2: Convert to fraction form
    70,736.09/97,612.17 = 38,898.86/x
  3. Step 3: Cross multiply
    70,736.09x = 97,612.17 × 38,898.86
  4. Step 4: Simplify right side
    70,736.09x = 3,797,001,647.07
  5. Step 5: Solve for x
    x = 3,797,001,647.07/70,736.09
  6. Step 6: Final answer
    x = 53,678.43

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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.