Home / 28,072,589.86-42,112,901.64-8,643,459.78

Finding the Fourth Proportional to 28,072,589.86, 42,112,901.64 and 8,643,459.78

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Solution

The fourth proportional to 28,072,589.86, 42,112,901.64 and 8,643,459.78 is: 12,966,426.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072,589.86 : 42,112,901.64 = 8,643,459.78 : x
  2. Step 2: Convert to fraction form
    28,072,589.86/42,112,901.64 = 8,643,459.78/x
  3. Step 3: Cross multiply
    28,072,589.86x = 42,112,901.64 × 8,643,459.78
  4. Step 4: Simplify right side
    28,072,589.86x = 364,001,171,501,218.69
  5. Step 5: Solve for x
    x = 364,001,171,501,218.69/28,072,589.86
  6. Step 6: Final answer
    x = 12,966,426.44

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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.