Home / 80,975.86-121,463.79-28,385.32

Finding the Fourth Proportional to 80,975.86, 121,463.79 and 28,385.32

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Solution

The fourth proportional to 80,975.86, 121,463.79 and 28,385.32 is: 42,577.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,975.86 : 121,463.79 = 28,385.32 : x
  2. Step 2: Convert to fraction form
    80,975.86/121,463.79 = 28,385.32/x
  3. Step 3: Cross multiply
    80,975.86x = 121,463.79 × 28,385.32
  4. Step 4: Simplify right side
    80,975.86x = 3,447,788,547.56
  5. Step 5: Solve for x
    x = 3,447,788,547.56/80,975.86
  6. Step 6: Final answer
    x = 42,577.98

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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.