Home / 30,872,078.20-42,613,007.97-19,858,828.15

Finding the Fourth Proportional to 30,872,078.20, 42,613,007.97 and 19,858,828.15

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Solution

The fourth proportional to 30,872,078.20, 42,613,007.97 and 19,858,828.15 is: 27,411,319.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,872,078.20 : 42,613,007.97 = 19,858,828.15 : x
  2. Step 2: Convert to fraction form
    30,872,078.20/42,613,007.97 = 19,858,828.15/x
  3. Step 3: Cross multiply
    30,872,078.20x = 42,613,007.97 × 19,858,828.15
  4. Step 4: Simplify right side
    30,872,078.20x = 846,244,402,230,810.25
  5. Step 5: Solve for x
    x = 846,244,402,230,810.25/30,872,078.20
  6. Step 6: Final answer
    x = 27,411,319.60

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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.