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Finding the Fourth Proportional to 27,529,978.05, 37,980,617.62 and 15,762,958.20

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Solution

The fourth proportional to 27,529,978.05, 37,980,617.62 and 15,762,958.20 is: 21,746,725.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,529,978.05 : 37,980,617.62 = 15,762,958.20 : x
  2. Step 2: Convert to fraction form
    27,529,978.05/37,980,617.62 = 15,762,958.20/x
  3. Step 3: Cross multiply
    27,529,978.05x = 37,980,617.62 × 15,762,958.20
  4. Step 4: Simplify right side
    27,529,978.05x = 598,686,887,954,243.38
  5. Step 5: Solve for x
    x = 598,686,887,954,243.38/27,529,978.05
  6. Step 6: Final answer
    x = 21,746,725.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.