Home / 73,120.61-109,665.07-42,705.42

Finding the Fourth Proportional to 73,120.61, 109,665.07 and 42,705.42

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Solution

The fourth proportional to 73,120.61, 109,665.07 and 42,705.42 is: 64,048.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,120.61 : 109,665.07 = 42,705.42 : x
  2. Step 2: Convert to fraction form
    73,120.61/109,665.07 = 42,705.42/x
  3. Step 3: Cross multiply
    73,120.61x = 109,665.07 × 42,705.42
  4. Step 4: Simplify right side
    73,120.61x = 4,683,292,325.35
  5. Step 5: Solve for x
    x = 4,683,292,325.35/73,120.61
  6. Step 6: Final answer
    x = 64,048.87

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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.