Home / 51,633.90-77,478.96-20,045.16

Finding the Fourth Proportional to 51,633.90, 77,478.96 and 20,045.16

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Solution

The fourth proportional to 51,633.90, 77,478.96 and 20,045.16 is: 30,078.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,633.90 : 77,478.96 = 20,045.16 : x
  2. Step 2: Convert to fraction form
    51,633.90/77,478.96 = 20,045.16/x
  3. Step 3: Cross multiply
    51,633.90x = 77,478.96 × 20,045.16
  4. Step 4: Simplify right side
    51,633.90x = 1,553,078,149.83
  5. Step 5: Solve for x
    x = 1,553,078,149.83/51,633.90
  6. Step 6: Final answer
    x = 30,078.65

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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.