Home / 38,910,309.90-53,697,369.59-21,270,187.31

Finding the Fourth Proportional to 38,910,309.90, 53,697,369.59 and 21,270,187.31

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Solution

The fourth proportional to 38,910,309.90, 53,697,369.59 and 21,270,187.31 is: 29,353,482.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,910,309.90 : 53,697,369.59 = 21,270,187.31 : x
  2. Step 2: Convert to fraction form
    38,910,309.90/53,697,369.59 = 21,270,187.31/x
  3. Step 3: Cross multiply
    38,910,309.90x = 53,697,369.59 × 21,270,187.31
  4. Step 4: Simplify right side
    38,910,309.90x = 1,142,153,108,938,523.25
  5. Step 5: Solve for x
    x = 1,142,153,108,938,523.25/38,910,309.90
  6. Step 6: Final answer
    x = 29,353,482.71

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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.