Home / 78,690.18-118,070.13-41,241.30

Finding the Fourth Proportional to 78,690.18, 118,070.13 and 41,241.30

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Solution

The fourth proportional to 78,690.18, 118,070.13 and 41,241.30 is: 61,880.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,690.18 : 118,070.13 = 41,241.30 : x
  2. Step 2: Convert to fraction form
    78,690.18/118,070.13 = 41,241.30/x
  3. Step 3: Cross multiply
    78,690.18x = 118,070.13 × 41,241.30
  4. Step 4: Simplify right side
    78,690.18x = 4,869,365,947.54
  5. Step 5: Solve for x
    x = 4,869,365,947.54/78,690.18
  6. Step 6: Final answer
    x = 61,880.22

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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.