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Finding the Fourth Proportional to 70,861,666.20, 106,292,500.80 and 17,008,978.20

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Solution

The fourth proportional to 70,861,666.20, 106,292,500.80 and 17,008,978.20 is: 25,513,467.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,861,666.20 : 106,292,500.80 = 17,008,978.20 : x
  2. Step 2: Convert to fraction form
    70,861,666.20/106,292,500.80 = 17,008,978.20/x
  3. Step 3: Cross multiply
    70,861,666.20x = 106,292,500.80 × 17,008,978.20
  4. Step 4: Simplify right side
    70,861,666.20x = 1,807,926,828,930,682.50
  5. Step 5: Solve for x
    x = 1,807,926,828,930,682.50/70,861,666.20
  6. Step 6: Final answer
    x = 25,513,467.66

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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.