Home / 85,355.64-117,830.61-49,538.70

Finding the Fourth Proportional to 85,355.64, 117,830.61 and 49,538.70

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Solution

The fourth proportional to 85,355.64, 117,830.61 and 49,538.70 is: 68,386.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,355.64 : 117,830.61 = 49,538.70 : x
  2. Step 2: Convert to fraction form
    85,355.64/117,830.61 = 49,538.70/x
  3. Step 3: Cross multiply
    85,355.64x = 117,830.61 × 49,538.70
  4. Step 4: Simplify right side
    85,355.64x = 5,837,175,239.61
  5. Step 5: Solve for x
    x = 5,837,175,239.61/85,355.64
  6. Step 6: Final answer
    x = 68,386.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.