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Finding the Fourth Proportional to 70,910.51, 97,856.03 and 39,079.40

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Solution

The fourth proportional to 70,910.51, 97,856.03 and 39,079.40 is: 53,929.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,910.51 : 97,856.03 = 39,079.40 : x
  2. Step 2: Convert to fraction form
    70,910.51/97,856.03 = 39,079.40/x
  3. Step 3: Cross multiply
    70,910.51x = 97,856.03 × 39,079.40
  4. Step 4: Simplify right side
    70,910.51x = 3,824,154,743.39
  5. Step 5: Solve for x
    x = 3,824,154,743.39/70,910.51
  6. Step 6: Final answer
    x = 53,929.31

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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.