Home / 51,132.78-70,566.63-30,991.59

Finding the Fourth Proportional to 51,132.78, 70,566.63 and 30,991.59

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Solution

The fourth proportional to 51,132.78, 70,566.63 and 30,991.59 is: 42,770.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,132.78 : 70,566.63 = 30,991.59 : x
  2. Step 2: Convert to fraction form
    51,132.78/70,566.63 = 30,991.59/x
  3. Step 3: Cross multiply
    51,132.78x = 70,566.63 × 30,991.59
  4. Step 4: Simplify right side
    51,132.78x = 2,186,972,064.64
  5. Step 5: Solve for x
    x = 2,186,972,064.64/51,132.78
  6. Step 6: Final answer
    x = 42,770.45

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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.