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Finding the Fourth Proportional to 72,655.44, 100,271.80 and 48,831.76

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Solution

The fourth proportional to 72,655.44, 100,271.80 and 48,831.76 is: 67,392.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,655.44 : 100,271.80 = 48,831.76 : x
  2. Step 2: Convert to fraction form
    72,655.44/100,271.80 = 48,831.76/x
  3. Step 3: Cross multiply
    72,655.44x = 100,271.80 × 48,831.76
  4. Step 4: Simplify right side
    72,655.44x = 4,896,448,472.37
  5. Step 5: Solve for x
    x = 4,896,448,472.37/72,655.44
  6. Step 6: Final answer
    x = 67,392.73

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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.