Home / 78,983.08-118,495.39-28,387.22

Finding the Fourth Proportional to 78,983.08, 118,495.39 and 28,387.22

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Solution

The fourth proportional to 78,983.08, 118,495.39 and 28,387.22 is: 42,588.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,983.08 : 118,495.39 = 28,387.22 : x
  2. Step 2: Convert to fraction form
    78,983.08/118,495.39 = 28,387.22/x
  3. Step 3: Cross multiply
    78,983.08x = 118,495.39 × 28,387.22
  4. Step 4: Simplify right side
    78,983.08x = 3,363,754,704.92
  5. Step 5: Solve for x
    x = 3,363,754,704.92/78,983.08
  6. Step 6: Final answer
    x = 42,588.29

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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.