Home / 79,890.42-119,748.90-39,391.94

Finding the Fourth Proportional to 79,890.42, 119,748.90 and 39,391.94

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Solution

The fourth proportional to 79,890.42, 119,748.90 and 39,391.94 is: 59,045.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,890.42 : 119,748.90 = 39,391.94 : x
  2. Step 2: Convert to fraction form
    79,890.42/119,748.90 = 39,391.94/x
  3. Step 3: Cross multiply
    79,890.42x = 119,748.90 × 39,391.94
  4. Step 4: Simplify right side
    79,890.42x = 4,717,141,483.87
  5. Step 5: Solve for x
    x = 4,717,141,483.87/79,890.42
  6. Step 6: Final answer
    x = 59,045.15

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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.