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Finding the Fourth Proportional to 76,462.65, 114,712.20 and 36,987.30

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Solution

The fourth proportional to 76,462.65, 114,712.20 and 36,987.30 is: 55,489.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,462.65 : 114,712.20 = 36,987.30 : x
  2. Step 2: Convert to fraction form
    76,462.65/114,712.20 = 36,987.30/x
  3. Step 3: Cross multiply
    76,462.65x = 114,712.20 × 36,987.30
  4. Step 4: Simplify right side
    76,462.65x = 4,242,894,555.06
  5. Step 5: Solve for x
    x = 4,242,894,555.06/76,462.65
  6. Step 6: Final answer
    x = 55,489.77

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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.