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Finding the Fourth Proportional to 52,650, 72,656.40 and 28,776.60

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Solution

The fourth proportional to 52,650, 72,656.40 and 28,776.60 is: 39,711.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,650 : 72,656.40 = 28,776.60 : x
  2. Step 2: Convert to fraction form
    52,650/72,656.40 = 28,776.60/x
  3. Step 3: Cross multiply
    52,650x = 72,656.40 × 28,776.60
  4. Step 4: Simplify right side
    52,650x = 2,090,804,160.24
  5. Step 5: Solve for x
    x = 2,090,804,160.24/52,650
  6. Step 6: Final answer
    x = 39,711.38

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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.