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Finding the Fourth Proportional to 72,216.63, 107,845.10 and 71,434.71

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Solution

The fourth proportional to 72,216.63, 107,845.10 and 71,434.71 is: 106,677.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,216.63 : 107,845.10 = 71,434.71 : x
  2. Step 2: Convert to fraction form
    72,216.63/107,845.10 = 71,434.71/x
  3. Step 3: Cross multiply
    72,216.63x = 107,845.10 × 71,434.71
  4. Step 4: Simplify right side
    72,216.63x = 7,703,883,354.13
  5. Step 5: Solve for x
    x = 7,703,883,354.13/72,216.63
  6. Step 6: Final answer
    x = 106,677.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.