Home / 78,176.10-117,193.08-40,692.15

Finding the Fourth Proportional to 78,176.10, 117,193.08 and 40,692.15

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Solution

The fourth proportional to 78,176.10, 117,193.08 and 40,692.15 is: 61,001.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,176.10 : 117,193.08 = 40,692.15 : x
  2. Step 2: Convert to fraction form
    78,176.10/117,193.08 = 40,692.15/x
  3. Step 3: Cross multiply
    78,176.10x = 117,193.08 × 40,692.15
  4. Step 4: Simplify right side
    78,176.10x = 4,768,838,390.32
  5. Step 5: Solve for x
    x = 4,768,838,390.32/78,176.10
  6. Step 6: Final answer
    x = 61,001.23

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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.