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Finding the Fourth Proportional to 77,630.76, 107,169.12 and 52,611.48

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Solution

The fourth proportional to 77,630.76, 107,169.12 and 52,611.48 is: 72,630.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,630.76 : 107,169.12 = 52,611.48 : x
  2. Step 2: Convert to fraction form
    77,630.76/107,169.12 = 52,611.48/x
  3. Step 3: Cross multiply
    77,630.76x = 107,169.12 × 52,611.48
  4. Step 4: Simplify right side
    77,630.76x = 5,638,326,013.50
  5. Step 5: Solve for x
    x = 5,638,326,013.50/77,630.76
  6. Step 6: Final answer
    x = 72,630.05

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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.