Home / 30,942,378.50-42,691,170.39-18,547,949.58

Finding the Fourth Proportional to 30,942,378.50, 42,691,170.39 and 18,547,949.58

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Solution

The fourth proportional to 30,942,378.50, 42,691,170.39 and 18,547,949.58 is: 25,590,588.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,942,378.50 : 42,691,170.39 = 18,547,949.58 : x
  2. Step 2: Convert to fraction form
    30,942,378.50/42,691,170.39 = 18,547,949.58/x
  3. Step 3: Cross multiply
    30,942,378.50x = 42,691,170.39 × 18,547,949.58
  4. Step 4: Simplify right side
    30,942,378.50x = 791,833,675,904,908.88
  5. Step 5: Solve for x
    x = 791,833,675,904,908.88/30,942,378.50
  6. Step 6: Final answer
    x = 25,590,588.52

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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.