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Finding the Fourth Proportional to 79,294.84, 119,417.40 and 72,208.96

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Solution

The fourth proportional to 79,294.84, 119,417.40 and 72,208.96 is: 108,746.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,294.84 : 119,417.40 = 72,208.96 : x
  2. Step 2: Convert to fraction form
    79,294.84/119,417.40 = 72,208.96/x
  3. Step 3: Cross multiply
    79,294.84x = 119,417.40 × 72,208.96
  4. Step 4: Simplify right side
    79,294.84x = 8,623,006,259.90
  5. Step 5: Solve for x
    x = 8,623,006,259.90/79,294.84
  6. Step 6: Final answer
    x = 108,746.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.