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Finding the Fourth Proportional to 107,489.70, 161,119.35 and 40,904.10

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Solution

The fourth proportional to 107,489.70, 161,119.35 and 40,904.10 is: 61,312.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,489.70 : 161,119.35 = 40,904.10 : x
  2. Step 2: Convert to fraction form
    107,489.70/161,119.35 = 40,904.10/x
  3. Step 3: Cross multiply
    107,489.70x = 161,119.35 × 40,904.10
  4. Step 4: Simplify right side
    107,489.70x = 6,590,442,004.34
  5. Step 5: Solve for x
    x = 6,590,442,004.34/107,489.70
  6. Step 6: Final answer
    x = 61,312.31

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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.