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Finding the Fourth Proportional to 53,670.60, 80,479.98 and 19,913.31

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Solution

The fourth proportional to 53,670.60, 80,479.98 and 19,913.31 is: 29,860.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,670.60 : 80,479.98 = 19,913.31 : x
  2. Step 2: Convert to fraction form
    53,670.60/80,479.98 = 19,913.31/x
  3. Step 3: Cross multiply
    53,670.60x = 80,479.98 × 19,913.31
  4. Step 4: Simplify right side
    53,670.60x = 1,602,622,790.53
  5. Step 5: Solve for x
    x = 1,602,622,790.53/53,670.60
  6. Step 6: Final answer
    x = 29,860.35

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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.