Home / 51,590.10-77,372.16-19,989.32

Finding the Fourth Proportional to 51,590.10, 77,372.16 and 19,989.32

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Solution

The fourth proportional to 51,590.10, 77,372.16 and 19,989.32 is: 29,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,590.10 : 77,372.16 = 19,989.32 : x
  2. Step 2: Convert to fraction form
    51,590.10/77,372.16 = 19,989.32/x
  3. Step 3: Cross multiply
    51,590.10x = 77,372.16 × 19,989.32
  4. Step 4: Simplify right side
    51,590.10x = 1,546,616,478.47
  5. Step 5: Solve for x
    x = 1,546,616,478.47/51,590.10
  6. Step 6: Final answer
    x = 29,978.94

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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.