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Finding the Fourth Proportional to 70,774.70, 97,668.72 and 38,943.47

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Solution

The fourth proportional to 70,774.70, 97,668.72 and 38,943.47 is: 53,741.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,774.70 : 97,668.72 = 38,943.47 : x
  2. Step 2: Convert to fraction form
    70,774.70/97,668.72 = 38,943.47/x
  3. Step 3: Cross multiply
    70,774.70x = 97,668.72 × 38,943.47
  4. Step 4: Simplify right side
    70,774.70x = 3,803,558,867.26
  5. Step 5: Solve for x
    x = 3,803,558,867.26/70,774.70
  6. Step 6: Final answer
    x = 53,741.79

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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.