Home / 75,345.15-112,853.70-45,711.30

Finding the Fourth Proportional to 75,345.15, 112,853.70 and 45,711.30

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Solution

The fourth proportional to 75,345.15, 112,853.70 and 45,711.30 is: 68,467.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,345.15 : 112,853.70 = 45,711.30 : x
  2. Step 2: Convert to fraction form
    75,345.15/112,853.70 = 45,711.30/x
  3. Step 3: Cross multiply
    75,345.15x = 112,853.70 × 45,711.30
  4. Step 4: Simplify right side
    75,345.15x = 5,158,689,336.81
  5. Step 5: Solve for x
    x = 5,158,689,336.81/75,345.15
  6. Step 6: Final answer
    x = 68,467.44

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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.