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Finding the Fourth Proportional to 70,309.96, 97,026.90 and 38,478.44

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Solution

The fourth proportional to 70,309.96, 97,026.90 and 38,478.44 is: 53,099.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,309.96 : 97,026.90 = 38,478.44 : x
  2. Step 2: Convert to fraction form
    70,309.96/97,026.90 = 38,478.44/x
  3. Step 3: Cross multiply
    70,309.96x = 97,026.90 × 38,478.44
  4. Step 4: Simplify right side
    70,309.96x = 3,733,443,750.04
  5. Step 5: Solve for x
    x = 3,733,443,750.04/70,309.96
  6. Step 6: Final answer
    x = 53,099.78

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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.