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Finding the Fourth Proportional to 28,395,929.60, 42,593,894.40 and 10,442,700.80

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Solution

The fourth proportional to 28,395,929.60, 42,593,894.40 and 10,442,700.80 is: 15,664,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,395,929.60 : 42,593,894.40 = 10,442,700.80 : x
  2. Step 2: Convert to fraction form
    28,395,929.60/42,593,894.40 = 10,442,700.80/x
  3. Step 3: Cross multiply
    28,395,929.60x = 42,593,894.40 × 10,442,700.80
  4. Step 4: Simplify right side
    28,395,929.60x = 444,795,295,125,995.56
  5. Step 5: Solve for x
    x = 444,795,295,125,995.56/28,395,929.60
  6. Step 6: Final answer
    x = 15,664,051.20

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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.