Home / 30,891,758.75-42,627,809.21-18,330,648.51

Finding the Fourth Proportional to 30,891,758.75, 42,627,809.21 and 18,330,648.51

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Solution

The fourth proportional to 30,891,758.75, 42,627,809.21 and 18,330,648.51 is: 25,294,622.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,891,758.75 : 42,627,809.21 = 18,330,648.51 : x
  2. Step 2: Convert to fraction form
    30,891,758.75/42,627,809.21 = 18,330,648.51/x
  3. Step 3: Cross multiply
    30,891,758.75x = 42,627,809.21 × 18,330,648.51
  4. Step 4: Simplify right side
    30,891,758.75x = 781,395,387,075,058.38
  5. Step 5: Solve for x
    x = 781,395,387,075,058.38/30,891,758.75
  6. Step 6: Final answer
    x = 25,294,622.86

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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.