Home / 56,811.22-78,402.93-31,660.66

Finding the Fourth Proportional to 56,811.22, 78,402.93 and 31,660.66

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Solution

The fourth proportional to 56,811.22, 78,402.93 and 31,660.66 is: 43,693.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,811.22 : 78,402.93 = 31,660.66 : x
  2. Step 2: Convert to fraction form
    56,811.22/78,402.93 = 31,660.66/x
  3. Step 3: Cross multiply
    56,811.22x = 78,402.93 × 31,660.66
  4. Step 4: Simplify right side
    56,811.22x = 2,482,288,509.73
  5. Step 5: Solve for x
    x = 2,482,288,509.73/56,811.22
  6. Step 6: Final answer
    x = 43,693.63

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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.