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Finding the Fourth Proportional to 56,395.76, 84,595.14 and 18,957.15

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Solution

The fourth proportional to 56,395.76, 84,595.14 and 18,957.15 is: 28,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,395.76 : 84,595.14 = 18,957.15 : x
  2. Step 2: Convert to fraction form
    56,395.76/84,595.14 = 18,957.15/x
  3. Step 3: Cross multiply
    56,395.76x = 84,595.14 × 18,957.15
  4. Step 4: Simplify right side
    56,395.76x = 1,603,682,758.25
  5. Step 5: Solve for x
    x = 1,603,682,758.25/56,395.76
  6. Step 6: Final answer
    x = 28,436.23

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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.