Home / 75,411.88-113,079.04-39,892.28

Finding the Fourth Proportional to 75,411.88, 113,079.04 and 39,892.28

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Solution

The fourth proportional to 75,411.88, 113,079.04 and 39,892.28 is: 59,817.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,411.88 : 113,079.04 = 39,892.28 : x
  2. Step 2: Convert to fraction form
    75,411.88/113,079.04 = 39,892.28/x
  3. Step 3: Cross multiply
    75,411.88x = 113,079.04 × 39,892.28
  4. Step 4: Simplify right side
    75,411.88x = 4,510,980,725.81
  5. Step 5: Solve for x
    x = 4,510,980,725.81/75,411.88
  6. Step 6: Final answer
    x = 59,817.91

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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.