Home / 31,019,451.30-42,778,976.04-19,418,072.40

Finding the Fourth Proportional to 31,019,451.30, 42,778,976.04 and 19,418,072.40

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Solution

The fourth proportional to 31,019,451.30, 42,778,976.04 and 19,418,072.40 is: 26,779,495.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,019,451.30 : 42,778,976.04 = 19,418,072.40 : x
  2. Step 2: Convert to fraction form
    31,019,451.30/42,778,976.04 = 19,418,072.40/x
  3. Step 3: Cross multiply
    31,019,451.30x = 42,778,976.04 × 19,418,072.40
  4. Step 4: Simplify right side
    31,019,451.30x = 830,685,253,942,585.25
  5. Step 5: Solve for x
    x = 830,685,253,942,585.25/31,019,451.30
  6. Step 6: Final answer
    x = 26,779,495.42

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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.