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Finding the Fourth Proportional to 70,940.78, 97,898.92 and 39,110.82

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Solution

The fourth proportional to 70,940.78, 97,898.92 and 39,110.82 is: 53,973.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,940.78 : 97,898.92 = 39,110.82 : x
  2. Step 2: Convert to fraction form
    70,940.78/97,898.92 = 39,110.82/x
  3. Step 3: Cross multiply
    70,940.78x = 97,898.92 × 39,110.82
  4. Step 4: Simplify right side
    70,940.78x = 3,828,907,038.31
  5. Step 5: Solve for x
    x = 3,828,907,038.31/70,940.78
  6. Step 6: Final answer
    x = 53,973.29

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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.