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Finding the Fourth Proportional to 70,895.90, 97,840.70 and 39,064.79

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Solution

The fourth proportional to 70,895.90, 97,840.70 and 39,064.79 is: 53,911.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,895.90 : 97,840.70 = 39,064.79 : x
  2. Step 2: Convert to fraction form
    70,895.90/97,840.70 = 39,064.79/x
  3. Step 3: Cross multiply
    70,895.90x = 97,840.70 × 39,064.79
  4. Step 4: Simplify right side
    70,895.90x = 3,822,126,398.95
  5. Step 5: Solve for x
    x = 3,822,126,398.95/70,895.90
  6. Step 6: Final answer
    x = 53,911.81

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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.