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Finding the Fourth Proportional to 76,606.56, 114,909.84 and 20,446.88

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Solution

The fourth proportional to 76,606.56, 114,909.84 and 20,446.88 is: 30,670.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,606.56 : 114,909.84 = 20,446.88 : x
  2. Step 2: Convert to fraction form
    76,606.56/114,909.84 = 20,446.88/x
  3. Step 3: Cross multiply
    76,606.56x = 114,909.84 × 20,446.88
  4. Step 4: Simplify right side
    76,606.56x = 2,349,547,781.12
  5. Step 5: Solve for x
    x = 2,349,547,781.12/76,606.56
  6. Step 6: Final answer
    x = 30,670.32

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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.