Home / 65,631.81-98,479.85-40,665.21

Finding the Fourth Proportional to 65,631.81, 98,479.85 and 40,665.21

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Solution

The fourth proportional to 65,631.81, 98,479.85 and 40,665.21 is: 61,017.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,631.81 : 98,479.85 = 40,665.21 : x
  2. Step 2: Convert to fraction form
    65,631.81/98,479.85 = 40,665.21/x
  3. Step 3: Cross multiply
    65,631.81x = 98,479.85 × 40,665.21
  4. Step 4: Simplify right side
    65,631.81x = 4,004,703,577.69
  5. Step 5: Solve for x
    x = 4,004,703,577.69/65,631.81
  6. Step 6: Final answer
    x = 61,017.72

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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.