Home / 51,387.28-70,913.28-30,168.52

Finding the Fourth Proportional to 51,387.28, 70,913.28 and 30,168.52

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Solution

The fourth proportional to 51,387.28, 70,913.28 and 30,168.52 is: 41,631.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,387.28 : 70,913.28 = 30,168.52 : x
  2. Step 2: Convert to fraction form
    51,387.28/70,913.28 = 30,168.52/x
  3. Step 3: Cross multiply
    51,387.28x = 70,913.28 × 30,168.52
  4. Step 4: Simplify right side
    51,387.28x = 2,139,348,705.95
  5. Step 5: Solve for x
    x = 2,139,348,705.95/51,387.28
  6. Step 6: Final answer
    x = 41,631.87

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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.