Home / 78,917.76-118,437.84-58,977.36

Finding the Fourth Proportional to 78,917.76, 118,437.84 and 58,977.36

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Solution

The fourth proportional to 78,917.76, 118,437.84 and 58,977.36 is: 88,511.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,917.76 : 118,437.84 = 58,977.36 : x
  2. Step 2: Convert to fraction form
    78,917.76/118,437.84 = 58,977.36/x
  3. Step 3: Cross multiply
    78,917.76x = 118,437.84 × 58,977.36
  4. Step 4: Simplify right side
    78,917.76x = 6,985,151,127.30
  5. Step 5: Solve for x
    x = 6,985,151,127.30/78,917.76
  6. Step 6: Final answer
    x = 88,511.78

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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.