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Finding the Fourth Proportional to 77,245.95, 106,609.47 and 43,267.42

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Solution

The fourth proportional to 77,245.95, 106,609.47 and 43,267.42 is: 59,714.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,245.95 : 106,609.47 = 43,267.42 : x
  2. Step 2: Convert to fraction form
    77,245.95/106,609.47 = 43,267.42/x
  3. Step 3: Cross multiply
    77,245.95x = 106,609.47 × 43,267.42
  4. Step 4: Simplify right side
    77,245.95x = 4,612,716,714.47
  5. Step 5: Solve for x
    x = 4,612,716,714.47/77,245.95
  6. Step 6: Final answer
    x = 59,714.67

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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.