Home / 78,435.45-117,631.17-56,182.68

Finding the Fourth Proportional to 78,435.45, 117,631.17 and 56,182.68

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Solution

The fourth proportional to 78,435.45, 117,631.17 and 56,182.68 is: 84,258.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,435.45 : 117,631.17 = 56,182.68 : x
  2. Step 2: Convert to fraction form
    78,435.45/117,631.17 = 56,182.68/x
  3. Step 3: Cross multiply
    78,435.45x = 117,631.17 × 56,182.68
  4. Step 4: Simplify right side
    78,435.45x = 6,608,834,382.14
  5. Step 5: Solve for x
    x = 6,608,834,382.14/78,435.45
  6. Step 6: Final answer
    x = 84,258.26

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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.