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Finding the Fourth Proportional to 72,317.39, 99,786.11 and 45,440.86

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Solution

The fourth proportional to 72,317.39, 99,786.11 and 45,440.86 is: 62,700.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,317.39 : 99,786.11 = 45,440.86 : x
  2. Step 2: Convert to fraction form
    72,317.39/99,786.11 = 45,440.86/x
  3. Step 3: Cross multiply
    72,317.39x = 99,786.11 × 45,440.86
  4. Step 4: Simplify right side
    72,317.39x = 4,534,366,654.45
  5. Step 5: Solve for x
    x = 4,534,366,654.45/72,317.39
  6. Step 6: Final answer
    x = 62,700.92

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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.