Home / 66,778.45-100,130.23-45,742.25

Finding the Fourth Proportional to 66,778.45, 100,130.23 and 45,742.25

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Solution

The fourth proportional to 66,778.45, 100,130.23 and 45,742.25 is: 68,587.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,778.45 : 100,130.23 = 45,742.25 : x
  2. Step 2: Convert to fraction form
    66,778.45/100,130.23 = 45,742.25/x
  3. Step 3: Cross multiply
    66,778.45x = 100,130.23 × 45,742.25
  4. Step 4: Simplify right side
    66,778.45x = 4,580,182,013.22
  5. Step 5: Solve for x
    x = 4,580,182,013.22/66,778.45
  6. Step 6: Final answer
    x = 68,587.73

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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.