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Finding the Fourth Proportional to 72,504.82, 100,031.56 and 45,637.53

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Solution

The fourth proportional to 72,504.82, 100,031.56 and 45,637.53 is: 62,963.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,504.82 : 100,031.56 = 45,637.53 : x
  2. Step 2: Convert to fraction form
    72,504.82/100,031.56 = 45,637.53/x
  3. Step 3: Cross multiply
    72,504.82x = 100,031.56 × 45,637.53
  4. Step 4: Simplify right side
    72,504.82x = 4,565,192,831.23
  5. Step 5: Solve for x
    x = 4,565,192,831.23/72,504.82
  6. Step 6: Final answer
    x = 62,963.99

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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.