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Finding the Fourth Proportional to 53,257.40, 79,831.02 and 19,953.98

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Solution

The fourth proportional to 53,257.40, 79,831.02 and 19,953.98 is: 29,910.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,257.40 : 79,831.02 = 19,953.98 : x
  2. Step 2: Convert to fraction form
    53,257.40/79,831.02 = 19,953.98/x
  3. Step 3: Cross multiply
    53,257.40x = 79,831.02 × 19,953.98
  4. Step 4: Simplify right side
    53,257.40x = 1,592,946,576.46
  5. Step 5: Solve for x
    x = 1,592,946,576.46/53,257.40
  6. Step 6: Final answer
    x = 29,910.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.