Home / 78,455.97-117,671.55-34,070.81

Finding the Fourth Proportional to 78,455.97, 117,671.55 and 34,070.81

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Solution

The fourth proportional to 78,455.97, 117,671.55 and 34,070.81 is: 51,100.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,455.97 : 117,671.55 = 34,070.81 : x
  2. Step 2: Convert to fraction form
    78,455.97/117,671.55 = 34,070.81/x
  3. Step 3: Cross multiply
    78,455.97x = 117,671.55 × 34,070.81
  4. Step 4: Simplify right side
    78,455.97x = 4,009,164,434.10
  5. Step 5: Solve for x
    x = 4,009,164,434.10/78,455.97
  6. Step 6: Final answer
    x = 51,100.82

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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.