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Finding the Fourth Proportional to 72,957.78, 100,619.46 and 50,332.86

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Solution

The fourth proportional to 72,957.78, 100,619.46 and 50,332.86 is: 69,416.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,957.78 : 100,619.46 = 50,332.86 : x
  2. Step 2: Convert to fraction form
    72,957.78/100,619.46 = 50,332.86/x
  3. Step 3: Cross multiply
    72,957.78x = 100,619.46 × 50,332.86
  4. Step 4: Simplify right side
    72,957.78x = 5,064,465,193.46
  5. Step 5: Solve for x
    x = 5,064,465,193.46/72,957.78
  6. Step 6: Final answer
    x = 69,416.38

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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.