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Finding the Fourth Proportional to 86,630.60, 129,958.98 and 36,710.90

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Solution

The fourth proportional to 86,630.60, 129,958.98 and 36,710.90 is: 55,071.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,630.60 : 129,958.98 = 36,710.90 : x
  2. Step 2: Convert to fraction form
    86,630.60/129,958.98 = 36,710.90/x
  3. Step 3: Cross multiply
    86,630.60x = 129,958.98 × 36,710.90
  4. Step 4: Simplify right side
    86,630.60x = 4,770,911,118.88
  5. Step 5: Solve for x
    x = 4,770,911,118.88/86,630.60
  6. Step 6: Final answer
    x = 55,071.89

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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.