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Finding the Fourth Proportional to 70,803.60, 97,709.44 and 38,971.68

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Solution

The fourth proportional to 70,803.60, 97,709.44 and 38,971.68 is: 53,781.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,803.60 : 97,709.44 = 38,971.68 : x
  2. Step 2: Convert to fraction form
    70,803.60/97,709.44 = 38,971.68/x
  3. Step 3: Cross multiply
    70,803.60x = 97,709.44 × 38,971.68
  4. Step 4: Simplify right side
    70,803.60x = 3,807,901,028.66
  5. Step 5: Solve for x
    x = 3,807,901,028.66/70,803.60
  6. Step 6: Final answer
    x = 53,781.18

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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.