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Finding the Fourth Proportional to 70,207.20, 105,310.80 and 64,302.30

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Solution

The fourth proportional to 70,207.20, 105,310.80 and 64,302.30 is: 96,453.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,207.20 : 105,310.80 = 64,302.30 : x
  2. Step 2: Convert to fraction form
    70,207.20/105,310.80 = 64,302.30/x
  3. Step 3: Cross multiply
    70,207.20x = 105,310.80 × 64,302.30
  4. Step 4: Simplify right side
    70,207.20x = 6,771,726,654.84
  5. Step 5: Solve for x
    x = 6,771,726,654.84/70,207.20
  6. Step 6: Final answer
    x = 96,453.45

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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.