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Finding the Fourth Proportional to 64,889.46, 97,394.94 and 39,978.33

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Solution

The fourth proportional to 64,889.46, 97,394.94 and 39,978.33 is: 60,004.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,889.46 : 97,394.94 = 39,978.33 : x
  2. Step 2: Convert to fraction form
    64,889.46/97,394.94 = 39,978.33/x
  3. Step 3: Cross multiply
    64,889.46x = 97,394.94 × 39,978.33
  4. Step 4: Simplify right side
    64,889.46x = 3,893,687,051.65
  5. Step 5: Solve for x
    x = 3,893,687,051.65/64,889.46
  6. Step 6: Final answer
    x = 60,004.92

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1.5x scale

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.