Home / 28,129,897.10-42,140,249.06-20,730,506.45

Finding the Fourth Proportional to 28,129,897.10, 42,140,249.06 and 20,730,506.45

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Solution

The fourth proportional to 28,129,897.10, 42,140,249.06 and 20,730,506.45 is: 31,055,524.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129,897.10 : 42,140,249.06 = 20,730,506.45 : x
  2. Step 2: Convert to fraction form
    28,129,897.10/42,140,249.06 = 20,730,506.45/x
  3. Step 3: Cross multiply
    28,129,897.10x = 42,140,249.06 × 20,730,506.45
  4. Step 4: Simplify right side
    28,129,897.10x = 873,588,704,628,582.62
  5. Step 5: Solve for x
    x = 873,588,704,628,582.62/28,129,897.10
  6. Step 6: Final answer
    x = 31,055,524.37

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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.