Home / 31,084,995-42,897,293.10-18,207,939

Finding the Fourth Proportional to 31,084,995, 42,897,293.10 and 18,207,939

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Solution

The fourth proportional to 31,084,995, 42,897,293.10 and 18,207,939 is: 25,126,955.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,084,995 : 42,897,293.10 = 18,207,939 : x
  2. Step 2: Convert to fraction form
    31,084,995/42,897,293.10 = 18,207,939/x
  3. Step 3: Cross multiply
    31,084,995x = 42,897,293.10 × 18,207,939
  4. Step 4: Simplify right side
    31,084,995x = 781,071,296,029,920.88
  5. Step 5: Solve for x
    x = 781,071,296,029,920.88/31,084,995
  6. Step 6: Final answer
    x = 25,126,955.82

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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.