Home / 85,308.86-117,763.98-55,108.90

Finding the Fourth Proportional to 85,308.86, 117,763.98 and 55,108.90

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Solution

The fourth proportional to 85,308.86, 117,763.98 and 55,108.90 is: 76,074.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,308.86 : 117,763.98 = 55,108.90 : x
  2. Step 2: Convert to fraction form
    85,308.86/117,763.98 = 55,108.90/x
  3. Step 3: Cross multiply
    85,308.86x = 117,763.98 × 55,108.90
  4. Step 4: Simplify right side
    85,308.86x = 6,489,843,397.42
  5. Step 5: Solve for x
    x = 6,489,843,397.42/85,308.86
  6. Step 6: Final answer
    x = 76,074.67

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1.5x scale

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.