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Finding the Fourth Proportional to 77,396.52, 106,808.40 and 43,412.55

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Solution

The fourth proportional to 77,396.52, 106,808.40 and 43,412.55 is: 59,909.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,396.52 : 106,808.40 = 43,412.55 : x
  2. Step 2: Convert to fraction form
    77,396.52/106,808.40 = 43,412.55/x
  3. Step 3: Cross multiply
    77,396.52x = 106,808.40 × 43,412.55
  4. Step 4: Simplify right side
    77,396.52x = 4,636,825,005.42
  5. Step 5: Solve for x
    x = 4,636,825,005.42/77,396.52
  6. Step 6: Final answer
    x = 59,909.99

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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.