Home / 56,631.80-78,145.08-31,133.96

Finding the Fourth Proportional to 56,631.80, 78,145.08 and 31,133.96

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Solution

The fourth proportional to 56,631.80, 78,145.08 and 31,133.96 is: 42,961.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,631.80 : 78,145.08 = 31,133.96 : x
  2. Step 2: Convert to fraction form
    56,631.80/78,145.08 = 31,133.96/x
  3. Step 3: Cross multiply
    56,631.80x = 78,145.08 × 31,133.96
  4. Step 4: Simplify right side
    56,631.80x = 2,432,965,794.92
  5. Step 5: Solve for x
    x = 2,432,965,794.92/56,631.80
  6. Step 6: Final answer
    x = 42,961.12

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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.