Home / 30,342,649.40-45,513,974.10-20,138,982.20

Finding the Fourth Proportional to 30,342,649.40, 45,513,974.10 and 20,138,982.20

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Solution

The fourth proportional to 30,342,649.40, 45,513,974.10 and 20,138,982.20 is: 30,208,473.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,342,649.40 : 45,513,974.10 = 20,138,982.20 : x
  2. Step 2: Convert to fraction form
    30,342,649.40/45,513,974.10 = 20,138,982.20/x
  3. Step 3: Cross multiply
    30,342,649.40x = 45,513,974.10 × 20,138,982.20
  4. Step 4: Simplify right side
    30,342,649.40x = 916,605,114,251,161
  5. Step 5: Solve for x
    x = 916,605,114,251,161/30,342,649.40
  6. Step 6: Final answer
    x = 30,208,473.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.