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Finding the Fourth Proportional to 53,646.87, 80,470.31 and 28,611.08

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Solution

The fourth proportional to 53,646.87, 80,470.31 and 28,611.08 is: 42,916.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,646.87 : 80,470.31 = 28,611.08 : x
  2. Step 2: Convert to fraction form
    53,646.87/80,470.31 = 28,611.08/x
  3. Step 3: Cross multiply
    53,646.87x = 80,470.31 × 28,611.08
  4. Step 4: Simplify right side
    53,646.87x = 2,302,341,931.63
  5. Step 5: Solve for x
    x = 2,302,341,931.63/53,646.87
  6. Step 6: Final answer
    x = 42,916.61

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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.