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Finding the Fourth Proportional to 70,286.30, 105,429.45 and 63,506.60

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Solution

The fourth proportional to 70,286.30, 105,429.45 and 63,506.60 is: 95,259.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,286.30 : 105,429.45 = 63,506.60 : x
  2. Step 2: Convert to fraction form
    70,286.30/105,429.45 = 63,506.60/x
  3. Step 3: Cross multiply
    70,286.30x = 105,429.45 × 63,506.60
  4. Step 4: Simplify right side
    70,286.30x = 6,695,465,909.37
  5. Step 5: Solve for x
    x = 6,695,465,909.37/70,286.30
  6. Step 6: Final answer
    x = 95,259.90

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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.