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Finding the Fourth Proportional to 52,778.42, 72,831.51 and 28,900.48

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Solution

The fourth proportional to 52,778.42, 72,831.51 and 28,900.48 is: 39,881.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,778.42 : 72,831.51 = 28,900.48 : x
  2. Step 2: Convert to fraction form
    52,778.42/72,831.51 = 28,900.48/x
  3. Step 3: Cross multiply
    52,778.42x = 72,831.51 × 28,900.48
  4. Step 4: Simplify right side
    52,778.42x = 2,104,865,233.97
  5. Step 5: Solve for x
    x = 2,104,865,233.97/52,778.42
  6. Step 6: Final answer
    x = 39,881.18

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1.5x scale

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.