Home / 51,216.49-70,683.40-31,078.47

Finding the Fourth Proportional to 51,216.49, 70,683.40 and 31,078.47

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Solution

The fourth proportional to 51,216.49, 70,683.40 and 31,078.47 is: 42,891.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,216.49 : 70,683.40 = 31,078.47 : x
  2. Step 2: Convert to fraction form
    51,216.49/70,683.40 = 31,078.47/x
  3. Step 3: Cross multiply
    51,216.49x = 70,683.40 × 31,078.47
  4. Step 4: Simplify right side
    51,216.49x = 2,196,731,926.40
  5. Step 5: Solve for x
    x = 2,196,731,926.40/51,216.49
  6. Step 6: Final answer
    x = 42,891.11

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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.