Home / 31,187,468.82-43,021,428.12-18,133,284.90

Finding the Fourth Proportional to 31,187,468.82, 43,021,428.12 and 18,133,284.90

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Solution

The fourth proportional to 31,187,468.82, 43,021,428.12 and 18,133,284.90 is: 25,013,886.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,187,468.82 : 43,021,428.12 = 18,133,284.90 : x
  2. Step 2: Convert to fraction form
    31,187,468.82/43,021,428.12 = 18,133,284.90/x
  3. Step 3: Cross multiply
    31,187,468.82x = 43,021,428.12 × 18,133,284.90
  4. Step 4: Simplify right side
    31,187,468.82x = 780,119,812,904,831.25
  5. Step 5: Solve for x
    x = 780,119,812,904,831.25/31,187,468.82
  6. Step 6: Final answer
    x = 25,013,886.74

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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.