Home / 51,587.40-71,203.28-31,455.39

Finding the Fourth Proportional to 51,587.40, 71,203.28 and 31,455.39

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Solution

The fourth proportional to 51,587.40, 71,203.28 and 31,455.39 is: 43,416.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,587.40 : 71,203.28 = 31,455.39 : x
  2. Step 2: Convert to fraction form
    51,587.40/71,203.28 = 31,455.39/x
  3. Step 3: Cross multiply
    51,587.40x = 71,203.28 × 31,455.39
  4. Step 4: Simplify right side
    51,587.40x = 2,239,726,941.68
  5. Step 5: Solve for x
    x = 2,239,726,941.68/51,587.40
  6. Step 6: Final answer
    x = 43,416.16

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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.