Home / 57,031.29-78,703.38-31,880.79

Finding the Fourth Proportional to 57,031.29, 78,703.38 and 31,880.79

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Solution

The fourth proportional to 57,031.29, 78,703.38 and 31,880.79 is: 43,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,031.29 : 78,703.38 = 31,880.79 : x
  2. Step 2: Convert to fraction form
    57,031.29/78,703.38 = 31,880.79/x
  3. Step 3: Cross multiply
    57,031.29x = 78,703.38 × 31,880.79
  4. Step 4: Simplify right side
    57,031.29x = 2,509,125,930.07
  5. Step 5: Solve for x
    x = 2,509,125,930.07/57,031.29
  6. Step 6: Final answer
    x = 43,995.60

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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.