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Finding the Fourth Proportional to 78,124.08, 117,205.56 and 22,720.08

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Solution

The fourth proportional to 78,124.08, 117,205.56 and 22,720.08 is: 34,085.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,124.08 : 117,205.56 = 22,720.08 : x
  2. Step 2: Convert to fraction form
    78,124.08/117,205.56 = 22,720.08/x
  3. Step 3: Cross multiply
    78,124.08x = 117,205.56 × 22,720.08
  4. Step 4: Simplify right side
    78,124.08x = 2,662,919,699.64
  5. Step 5: Solve for x
    x = 2,662,919,699.64/78,124.08
  6. Step 6: Final answer
    x = 34,085.77

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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.