Home / 51,387.12-70,902.36-30,165.36

Finding the Fourth Proportional to 51,387.12, 70,902.36 and 30,165.36

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Solution

The fourth proportional to 51,387.12, 70,902.36 and 30,165.36 is: 41,621.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,387.12 : 70,902.36 = 30,165.36 : x
  2. Step 2: Convert to fraction form
    51,387.12/70,902.36 = 30,165.36/x
  3. Step 3: Cross multiply
    51,387.12x = 70,902.36 × 30,165.36
  4. Step 4: Simplify right side
    51,387.12x = 2,138,795,214.25
  5. Step 5: Solve for x
    x = 2,138,795,214.25/51,387.12
  6. Step 6: Final answer
    x = 41,621.23

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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.