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Finding the Fourth Proportional to 52,859.30, 72,946.87 and 28,986.02

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Solution

The fourth proportional to 52,859.30, 72,946.87 and 28,986.02 is: 40,001.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,859.30 : 72,946.87 = 28,986.02 : x
  2. Step 2: Convert to fraction form
    52,859.30/72,946.87 = 28,986.02/x
  3. Step 3: Cross multiply
    52,859.30x = 72,946.87 × 28,986.02
  4. Step 4: Simplify right side
    52,859.30x = 2,114,439,269.11
  5. Step 5: Solve for x
    x = 2,114,439,269.11/52,859.30
  6. Step 6: Final answer
    x = 40,001.28

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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.