Home / 28,038,121.20-42,057,181.80-12,081,769.20

Finding the Fourth Proportional to 28,038,121.20, 42,057,181.80 and 12,081,769.20

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Solution

The fourth proportional to 28,038,121.20, 42,057,181.80 and 12,081,769.20 is: 18,122,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,038,121.20 : 42,057,181.80 = 12,081,769.20 : x
  2. Step 2: Convert to fraction form
    28,038,121.20/42,057,181.80 = 12,081,769.20/x
  3. Step 3: Cross multiply
    28,038,121.20x = 42,057,181.80 × 12,081,769.20
  4. Step 4: Simplify right side
    28,038,121.20x = 508,125,163,710,040.50
  5. Step 5: Solve for x
    x = 508,125,163,710,040.50/28,038,121.20
  6. Step 6: Final answer
    x = 18,122,653.80

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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.