Home / 30,891,759.25-42,627,809.90-18,330,649.01

Finding the Fourth Proportional to 30,891,759.25, 42,627,809.90 and 18,330,649.01

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Solution

The fourth proportional to 30,891,759.25, 42,627,809.90 and 18,330,649.01 is: 25,294,623.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,891,759.25 : 42,627,809.90 = 18,330,649.01 : x
  2. Step 2: Convert to fraction form
    30,891,759.25/42,627,809.90 = 18,330,649.01/x
  3. Step 3: Cross multiply
    30,891,759.25x = 42,627,809.90 × 18,330,649.01
  4. Step 4: Simplify right side
    30,891,759.25x = 781,395,421,037,110.88
  5. Step 5: Solve for x
    x = 781,395,421,037,110.88/30,891,759.25
  6. Step 6: Final answer
    x = 25,294,623.55

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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.