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Finding the Fourth Proportional to 73,821,423.20, 110,698,957.20 and 28,368,111.20

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Solution

The fourth proportional to 73,821,423.20, 110,698,957.20 and 28,368,111.20 is: 42,539,417.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,821,423.20 : 110,698,957.20 = 28,368,111.20 : x
  2. Step 2: Convert to fraction form
    73,821,423.20/110,698,957.20 = 28,368,111.20/x
  3. Step 3: Cross multiply
    73,821,423.20x = 110,698,957.20 × 28,368,111.20
  4. Step 4: Simplify right side
    73,821,423.20x = 3,140,320,327,573,640.50
  5. Step 5: Solve for x
    x = 3,140,320,327,573,640.50/73,821,423.20
  6. Step 6: Final answer
    x = 42,539,417.31

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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.