Home / 56,590.28-78,097.05-31,439.78

Finding the Fourth Proportional to 56,590.28, 78,097.05 and 31,439.78

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Solution

The fourth proportional to 56,590.28, 78,097.05 and 31,439.78 is: 43,388.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,590.28 : 78,097.05 = 31,439.78 : x
  2. Step 2: Convert to fraction form
    56,590.28/78,097.05 = 31,439.78/x
  3. Step 3: Cross multiply
    56,590.28x = 78,097.05 × 31,439.78
  4. Step 4: Simplify right side
    56,590.28x = 2,455,354,070.65
  5. Step 5: Solve for x
    x = 2,455,354,070.65/56,590.28
  6. Step 6: Final answer
    x = 43,388.27

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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.