Home / 57,127-78,835.26-31,976.68

Finding the Fourth Proportional to 57,127, 78,835.26 and 31,976.68

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Solution

The fourth proportional to 57,127, 78,835.26 and 31,976.68 is: 44,127.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,127 : 78,835.26 = 31,976.68 : x
  2. Step 2: Convert to fraction form
    57,127/78,835.26 = 31,976.68/x
  3. Step 3: Cross multiply
    57,127x = 78,835.26 × 31,976.68
  4. Step 4: Simplify right side
    57,127x = 2,520,889,881.74
  5. Step 5: Solve for x
    x = 2,520,889,881.74/57,127
  6. Step 6: Final answer
    x = 44,127.82

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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.