Home / 78,579.18-108,430.39-46,311.70

Finding the Fourth Proportional to 78,579.18, 108,430.39 and 46,311.70

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Solution

The fourth proportional to 78,579.18, 108,430.39 and 46,311.70 is: 63,904.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,579.18 : 108,430.39 = 46,311.70 : x
  2. Step 2: Convert to fraction form
    78,579.18/108,430.39 = 46,311.70/x
  3. Step 3: Cross multiply
    78,579.18x = 108,430.39 × 46,311.70
  4. Step 4: Simplify right side
    78,579.18x = 5,021,595,692.56
  5. Step 5: Solve for x
    x = 5,021,595,692.56/78,579.18
  6. Step 6: Final answer
    x = 63,904.91

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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.