Home / 30,943,394.50-42,703,036.83-18,555,504.79

Finding the Fourth Proportional to 30,943,394.50, 42,703,036.83 and 18,555,504.79

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Solution

The fourth proportional to 30,943,394.50, 42,703,036.83 and 18,555,504.79 is: 25,607,287.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,943,394.50 : 42,703,036.83 = 18,555,504.79 : x
  2. Step 2: Convert to fraction form
    30,943,394.50/42,703,036.83 = 18,555,504.79/x
  3. Step 3: Cross multiply
    30,943,394.50x = 42,703,036.83 × 18,555,504.79
  4. Step 4: Simplify right side
    30,943,394.50x = 792,376,404,140,318.75
  5. Step 5: Solve for x
    x = 792,376,404,140,318.75/30,943,394.50
  6. Step 6: Final answer
    x = 25,607,287.66

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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.