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Finding the Fourth Proportional to 28,404,805.60, 42,579,214.80 and 14,016,095.20

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Solution

The fourth proportional to 28,404,805.60, 42,579,214.80 and 14,016,095.20 is: 21,010,329.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404,805.60 : 42,579,214.80 = 14,016,095.20 : x
  2. Step 2: Convert to fraction form
    28,404,805.60/42,579,214.80 = 14,016,095.20/x
  3. Step 3: Cross multiply
    28,404,805.60x = 42,579,214.80 × 14,016,095.20
  4. Step 4: Simplify right side
    28,404,805.60x = 596,794,328,178,048.88
  5. Step 5: Solve for x
    x = 596,794,328,178,048.88/28,404,805.60
  6. Step 6: Final answer
    x = 21,010,329.61

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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.