Home / 56,309.76-77,708.16-31,161.60

Finding the Fourth Proportional to 56,309.76, 77,708.16 and 31,161.60

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Solution

The fourth proportional to 56,309.76, 77,708.16 and 31,161.60 is: 43,003.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,309.76 : 77,708.16 = 31,161.60 : x
  2. Step 2: Convert to fraction form
    56,309.76/77,708.16 = 31,161.60/x
  3. Step 3: Cross multiply
    56,309.76x = 77,708.16 × 31,161.60
  4. Step 4: Simplify right side
    56,309.76x = 2,421,510,598.66
  5. Step 5: Solve for x
    x = 2,421,510,598.66/56,309.76
  6. Step 6: Final answer
    x = 43,003.39

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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.