Home / 56,937.69-85,405.35-18,989.70

Finding the Fourth Proportional to 56,937.69, 85,405.35 and 18,989.70

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Solution

The fourth proportional to 56,937.69, 85,405.35 and 18,989.70 is: 28,484.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,937.69 : 85,405.35 = 18,989.70 : x
  2. Step 2: Convert to fraction form
    56,937.69/85,405.35 = 18,989.70/x
  3. Step 3: Cross multiply
    56,937.69x = 85,405.35 × 18,989.70
  4. Step 4: Simplify right side
    56,937.69x = 1,621,821,974.90
  5. Step 5: Solve for x
    x = 1,621,821,974.90/56,937.69
  6. Step 6: Final answer
    x = 28,484.15

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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.