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Finding the Fourth Proportional to 52,739.01, 72,780.02 and 28,539.97

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Solution

The fourth proportional to 52,739.01, 72,780.02 and 28,539.97 is: 39,385.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,739.01 : 72,780.02 = 28,539.97 : x
  2. Step 2: Convert to fraction form
    52,739.01/72,780.02 = 28,539.97/x
  3. Step 3: Cross multiply
    52,739.01x = 72,780.02 × 28,539.97
  4. Step 4: Simplify right side
    52,739.01x = 2,077,139,587.40
  5. Step 5: Solve for x
    x = 2,077,139,587.40/52,739.01
  6. Step 6: Final answer
    x = 39,385.26

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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.