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Finding the Fourth Proportional to 79,402, 119,139.36 and 34,437.12

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Solution

The fourth proportional to 79,402, 119,139.36 and 34,437.12 is: 51,671.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,402 : 119,139.36 = 34,437.12 : x
  2. Step 2: Convert to fraction form
    79,402/119,139.36 = 34,437.12/x
  3. Step 3: Cross multiply
    79,402x = 119,139.36 × 34,437.12
  4. Step 4: Simplify right side
    79,402x = 4,102,816,437.04
  5. Step 5: Solve for x
    x = 4,102,816,437.04/79,402
  6. Step 6: Final answer
    x = 51,671.45

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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.