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Finding the Fourth Proportional to 52,787, 72,847.26 and 28,913.48

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Solution

The fourth proportional to 52,787, 72,847.26 and 28,913.48 is: 39,901.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,787 : 72,847.26 = 28,913.48 : x
  2. Step 2: Convert to fraction form
    52,787/72,847.26 = 28,913.48/x
  3. Step 3: Cross multiply
    52,787x = 72,847.26 × 28,913.48
  4. Step 4: Simplify right side
    52,787x = 2,106,267,795.06
  5. Step 5: Solve for x
    x = 2,106,267,795.06/52,787
  6. Step 6: Final answer
    x = 39,901.26

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1.5x scale

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.