Home / 78,563.35-117,613.50-51,860.08

Finding the Fourth Proportional to 78,563.35, 117,613.50 and 51,860.08

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Solution

The fourth proportional to 78,563.35, 117,613.50 and 51,860.08 is: 77,637.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,563.35 : 117,613.50 = 51,860.08 : x
  2. Step 2: Convert to fraction form
    78,563.35/117,613.50 = 51,860.08/x
  3. Step 3: Cross multiply
    78,563.35x = 117,613.50 × 51,860.08
  4. Step 4: Simplify right side
    78,563.35x = 6,099,445,519.08
  5. Step 5: Solve for x
    x = 6,099,445,519.08/78,563.35
  6. Step 6: Final answer
    x = 77,637.29

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1.5x scale

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.