Home / 78,455.72-117,671.18-34,070.56

Finding the Fourth Proportional to 78,455.72, 117,671.18 and 34,070.56

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Solution

The fourth proportional to 78,455.72, 117,671.18 and 34,070.56 is: 51,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,455.72 : 117,671.18 = 34,070.56 : x
  2. Step 2: Convert to fraction form
    78,455.72/117,671.18 = 34,070.56/x
  3. Step 3: Cross multiply
    78,455.72x = 117,671.18 × 34,070.56
  4. Step 4: Simplify right side
    78,455.72x = 4,009,122,239.75
  5. Step 5: Solve for x
    x = 4,009,122,239.75/78,455.72
  6. Step 6: Final answer
    x = 51,100.45

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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.