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Finding the Fourth Proportional to 10,787,574.80, 16,170,475.80 and 5,387,920.40

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Solution

The fourth proportional to 10,787,574.80, 16,170,475.80 and 5,387,920.40 is: 8,076,443.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787,574.80 : 16,170,475.80 = 5,387,920.40 : x
  2. Step 2: Convert to fraction form
    10,787,574.80/16,170,475.80 = 5,387,920.40/x
  3. Step 3: Cross multiply
    10,787,574.80x = 16,170,475.80 × 5,387,920.40
  4. Step 4: Simplify right side
    10,787,574.80x = 87,125,236,440,526.33
  5. Step 5: Solve for x
    x = 87,125,236,440,526.33/10,787,574.80
  6. Step 6: Final answer
    x = 8,076,443.32

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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.