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Finding the Fourth Proportional to 70,001.74, 104,971.69 and 20,070.51

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Solution

The fourth proportional to 70,001.74, 104,971.69 and 20,070.51 is: 30,096.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,001.74 : 104,971.69 = 20,070.51 : x
  2. Step 2: Convert to fraction form
    70,001.74/104,971.69 = 20,070.51/x
  3. Step 3: Cross multiply
    70,001.74x = 104,971.69 × 20,070.51
  4. Step 4: Simplify right side
    70,001.74x = 2,106,835,353.86
  5. Step 5: Solve for x
    x = 2,106,835,353.86/70,001.74
  6. Step 6: Final answer
    x = 30,096.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.