Home / 71,809.07-99,095.20-39,977.42

Finding the Fourth Proportional to 71,809.07, 99,095.20 and 39,977.42

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Solution

The fourth proportional to 71,809.07, 99,095.20 and 39,977.42 is: 55,168.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,809.07 : 99,095.20 = 39,977.42 : x
  2. Step 2: Convert to fraction form
    71,809.07/99,095.20 = 39,977.42/x
  3. Step 3: Cross multiply
    71,809.07x = 99,095.20 × 39,977.42
  4. Step 4: Simplify right side
    71,809.07x = 3,961,569,834.96
  5. Step 5: Solve for x
    x = 3,961,569,834.96/71,809.07
  6. Step 6: Final answer
    x = 55,168.10

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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.