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Finding the Fourth Proportional to 70,666.20, 99,063.90 and 70,666.20

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Solution

The fourth proportional to 70,666.20, 99,063.90 and 70,666.20 is: 99,063.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,666.20 : 99,063.90 = 70,666.20 : x
  2. Step 2: Convert to fraction form
    70,666.20/99,063.90 = 70,666.20/x
  3. Step 3: Cross multiply
    70,666.20x = 99,063.90 × 70,666.20
  4. Step 4: Simplify right side
    70,666.20x = 7,000,469,370.18
  5. Step 5: Solve for x
    x = 7,000,469,370.18/70,666.20
  6. Step 6: Final answer
    x = 99,063.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.