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Finding the Fourth Proportional to 70,127.86, 105,117.90 and 34,539.88

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Solution

The fourth proportional to 70,127.86, 105,117.90 and 34,539.88 is: 51,773.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,127.86 : 105,117.90 = 34,539.88 : x
  2. Step 2: Convert to fraction form
    70,127.86/105,117.90 = 34,539.88/x
  3. Step 3: Cross multiply
    70,127.86x = 105,117.90 × 34,539.88
  4. Step 4: Simplify right side
    70,127.86x = 3,630,759,651.85
  5. Step 5: Solve for x
    x = 3,630,759,651.85/70,127.86
  6. Step 6: Final answer
    x = 51,773.43

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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.