Home / 56,643.75-78,168.51-31,498.11

Finding the Fourth Proportional to 56,643.75, 78,168.51 and 31,498.11

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Solution

The fourth proportional to 56,643.75, 78,168.51 and 31,498.11 is: 43,467.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,643.75 : 78,168.51 = 31,498.11 : x
  2. Step 2: Convert to fraction form
    56,643.75/78,168.51 = 31,498.11/x
  3. Step 3: Cross multiply
    56,643.75x = 78,168.51 × 31,498.11
  4. Step 4: Simplify right side
    56,643.75x = 2,462,160,326.52
  5. Step 5: Solve for x
    x = 2,462,160,326.52/56,643.75
  6. Step 6: Final answer
    x = 43,467.47

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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.