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Finding the Fourth Proportional to 57,300.36, 79,070.54 and 31,805.79

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Solution

The fourth proportional to 57,300.36, 79,070.54 and 31,805.79 is: 43,889.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,300.36 : 79,070.54 = 31,805.79 : x
  2. Step 2: Convert to fraction form
    57,300.36/79,070.54 = 31,805.79/x
  3. Step 3: Cross multiply
    57,300.36x = 79,070.54 × 31,805.79
  4. Step 4: Simplify right side
    57,300.36x = 2,514,900,831.40
  5. Step 5: Solve for x
    x = 2,514,900,831.40/57,300.36
  6. Step 6: Final answer
    x = 43,889.79

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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.