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Finding the Fourth Proportional to 70,698.82, 97,564.63 and 38,869.74

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Solution

The fourth proportional to 70,698.82, 97,564.63 and 38,869.74 is: 53,640.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,698.82 : 97,564.63 = 38,869.74 : x
  2. Step 2: Convert to fraction form
    70,698.82/97,564.63 = 38,869.74/x
  3. Step 3: Cross multiply
    70,698.82x = 97,564.63 × 38,869.74
  4. Step 4: Simplify right side
    70,698.82x = 3,792,311,801.30
  5. Step 5: Solve for x
    x = 3,792,311,801.30/70,698.82
  6. Step 6: Final answer
    x = 53,640.38

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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.