Home / 78,317.22-108,077.87-42,507.23

Finding the Fourth Proportional to 78,317.22, 108,077.87 and 42,507.23

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Solution

The fourth proportional to 78,317.22, 108,077.87 and 42,507.23 is: 58,660.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,317.22 : 108,077.87 = 42,507.23 : x
  2. Step 2: Convert to fraction form
    78,317.22/108,077.87 = 42,507.23/x
  3. Step 3: Cross multiply
    78,317.22x = 108,077.87 × 42,507.23
  4. Step 4: Simplify right side
    78,317.22x = 4,594,090,878.00
  5. Step 5: Solve for x
    x = 4,594,090,878.00/78,317.22
  6. Step 6: Final answer
    x = 58,660.04

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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.