Home / 78,455.22-117,670.43-34,070.06

Finding the Fourth Proportional to 78,455.22, 117,670.43 and 34,070.06

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Solution

The fourth proportional to 78,455.22, 117,670.43 and 34,070.06 is: 51,099.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,455.22 : 117,670.43 = 34,070.06 : x
  2. Step 2: Convert to fraction form
    78,455.22/117,670.43 = 34,070.06/x
  3. Step 3: Cross multiply
    78,455.22x = 117,670.43 × 34,070.06
  4. Step 4: Simplify right side
    78,455.22x = 4,009,037,851.62
  5. Step 5: Solve for x
    x = 4,009,037,851.62/78,455.22
  6. Step 6: Final answer
    x = 51,099.70

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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.