Home / 56,689.83-85,031.92-21,148.36

Finding the Fourth Proportional to 56,689.83, 85,031.92 and 21,148.36

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Solution

The fourth proportional to 56,689.83, 85,031.92 and 21,148.36 is: 31,721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,689.83 : 85,031.92 = 21,148.36 : x
  2. Step 2: Convert to fraction form
    56,689.83/85,031.92 = 21,148.36/x
  3. Step 3: Cross multiply
    56,689.83x = 85,031.92 × 21,148.36
  4. Step 4: Simplify right side
    56,689.83x = 1,798,285,655.65
  5. Step 5: Solve for x
    x = 1,798,285,655.65/56,689.83
  6. Step 6: Final answer
    x = 31,721.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.