Home / 78,507.30-108,336.98-42,697.27

Finding the Fourth Proportional to 78,507.30, 108,336.98 and 42,697.27

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Solution

The fourth proportional to 78,507.30, 108,336.98 and 42,697.27 is: 58,920.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,507.30 : 108,336.98 = 42,697.27 : x
  2. Step 2: Convert to fraction form
    78,507.30/108,336.98 = 42,697.27/x
  3. Step 3: Cross multiply
    78,507.30x = 108,336.98 × 42,697.27
  4. Step 4: Simplify right side
    78,507.30x = 4,625,692,530.87
  5. Step 5: Solve for x
    x = 4,625,692,530.87/78,507.30
  6. Step 6: Final answer
    x = 58,920.54

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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.