Home / 47,787.60-71,661.96-21,485.28

Finding the Fourth Proportional to 47,787.60, 71,661.96 and 21,485.28

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Solution

The fourth proportional to 47,787.60, 71,661.96 and 21,485.28 is: 32,219.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,787.60 : 71,661.96 = 21,485.28 : x
  2. Step 2: Convert to fraction form
    47,787.60/71,661.96 = 21,485.28/x
  3. Step 3: Cross multiply
    47,787.60x = 71,661.96 × 21,485.28
  4. Step 4: Simplify right side
    47,787.60x = 1,539,677,275.95
  5. Step 5: Solve for x
    x = 1,539,677,275.95/47,787.60
  6. Step 6: Final answer
    x = 32,219.18

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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.