Home / 51,772.77-77,688.66-20,178.72

Finding the Fourth Proportional to 51,772.77, 77,688.66 and 20,178.72

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Solution

The fourth proportional to 51,772.77, 77,688.66 and 20,178.72 is: 30,279.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,772.77 : 77,688.66 = 20,178.72 : x
  2. Step 2: Convert to fraction form
    51,772.77/77,688.66 = 20,178.72/x
  3. Step 3: Cross multiply
    51,772.77x = 77,688.66 × 20,178.72
  4. Step 4: Simplify right side
    51,772.77x = 1,567,657,717.32
  5. Step 5: Solve for x
    x = 1,567,657,717.32/51,772.77
  6. Step 6: Final answer
    x = 30,279.58

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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.