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Finding the Fourth Proportional to 70,394.56, 105,479.52 and 51,587.44

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Solution

The fourth proportional to 70,394.56, 105,479.52 and 51,587.44 is: 77,298.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,394.56 : 105,479.52 = 51,587.44 : x
  2. Step 2: Convert to fraction form
    70,394.56/105,479.52 = 51,587.44/x
  3. Step 3: Cross multiply
    70,394.56x = 105,479.52 × 51,587.44
  4. Step 4: Simplify right side
    70,394.56x = 5,441,418,409.23
  5. Step 5: Solve for x
    x = 5,441,418,409.23/70,394.56
  6. Step 6: Final answer
    x = 77,298.85

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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.