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Finding the Fourth Proportional to 72,203.71, 108,305.86 and 47,400.70

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Solution

The fourth proportional to 72,203.71, 108,305.86 and 47,400.70 is: 71,101.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,203.71 : 108,305.86 = 47,400.70 : x
  2. Step 2: Convert to fraction form
    72,203.71/108,305.86 = 47,400.70/x
  3. Step 3: Cross multiply
    72,203.71x = 108,305.86 × 47,400.70
  4. Step 4: Simplify right side
    72,203.71x = 5,133,773,095.82
  5. Step 5: Solve for x
    x = 5,133,773,095.82/72,203.71
  6. Step 6: Final answer
    x = 71,101.24

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1.5x scale

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.