Home / 75,140.58-112,756.67-39,120.69

Finding the Fourth Proportional to 75,140.58, 112,756.67 and 39,120.69

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Solution

The fourth proportional to 75,140.58, 112,756.67 and 39,120.69 is: 58,704.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,140.58 : 112,756.67 = 39,120.69 : x
  2. Step 2: Convert to fraction form
    75,140.58/112,756.67 = 39,120.69/x
  3. Step 3: Cross multiply
    75,140.58x = 112,756.67 × 39,120.69
  4. Step 4: Simplify right side
    75,140.58x = 4,411,118,732.50
  5. Step 5: Solve for x
    x = 4,411,118,732.50/75,140.58
  6. Step 6: Final answer
    x = 58,704.88

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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.