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Finding the Fourth Proportional to 70,910.51, 97,856.51 and 38,645.13

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Solution

The fourth proportional to 70,910.51, 97,856.51 and 38,645.13 is: 53,330.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,910.51 : 97,856.51 = 38,645.13 : x
  2. Step 2: Convert to fraction form
    70,910.51/97,856.51 = 38,645.13/x
  3. Step 3: Cross multiply
    70,910.51x = 97,856.51 × 38,645.13
  4. Step 4: Simplify right side
    70,910.51x = 3,781,677,550.30
  5. Step 5: Solve for x
    x = 3,781,677,550.30/70,910.51
  6. Step 6: Final answer
    x = 53,330.28

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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.