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Finding the Fourth Proportional to 52,643.73, 72,648.19 and 28,770.40

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Solution

The fourth proportional to 52,643.73, 72,648.19 and 28,770.40 is: 39,703.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,643.73 : 72,648.19 = 28,770.40 : x
  2. Step 2: Convert to fraction form
    52,643.73/72,648.19 = 28,770.40/x
  3. Step 3: Cross multiply
    52,643.73x = 72,648.19 × 28,770.40
  4. Step 4: Simplify right side
    52,643.73x = 2,090,117,485.58
  5. Step 5: Solve for x
    x = 2,090,117,485.58/52,643.73
  6. Step 6: Final answer
    x = 39,703.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.