Home / 56,021.63-77,311.49-30,872.75

Finding the Fourth Proportional to 56,021.63, 77,311.49 and 30,872.75

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Solution

The fourth proportional to 56,021.63, 77,311.49 and 30,872.75 is: 42,605.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,021.63 : 77,311.49 = 30,872.75 : x
  2. Step 2: Convert to fraction form
    56,021.63/77,311.49 = 30,872.75/x
  3. Step 3: Cross multiply
    56,021.63x = 77,311.49 × 30,872.75
  4. Step 4: Simplify right side
    56,021.63x = 2,386,817,993.52
  5. Step 5: Solve for x
    x = 2,386,817,993.52/56,021.63
  6. Step 6: Final answer
    x = 42,605.30

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1.5x scale

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.