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Finding the Fourth Proportional to 76,853.68, 115,124.70 and 43,503.64

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Solution

The fourth proportional to 76,853.68, 115,124.70 and 43,503.64 is: 65,167.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,853.68 : 115,124.70 = 43,503.64 : x
  2. Step 2: Convert to fraction form
    76,853.68/115,124.70 = 43,503.64/x
  3. Step 3: Cross multiply
    76,853.68x = 115,124.70 × 43,503.64
  4. Step 4: Simplify right side
    76,853.68x = 5,008,343,503.91
  5. Step 5: Solve for x
    x = 5,008,343,503.91/76,853.68
  6. Step 6: Final answer
    x = 65,167.26

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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.