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Finding the Fourth Proportional to 52,797.61, 72,857.64 and 28,920.13

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Solution

The fourth proportional to 52,797.61, 72,857.64 and 28,920.13 is: 39,908.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,797.61 : 72,857.64 = 28,920.13 : x
  2. Step 2: Convert to fraction form
    52,797.61/72,857.64 = 28,920.13/x
  3. Step 3: Cross multiply
    52,797.61x = 72,857.64 × 28,920.13
  4. Step 4: Simplify right side
    52,797.61x = 2,107,052,420.29
  5. Step 5: Solve for x
    x = 2,107,052,420.29/52,797.61
  6. Step 6: Final answer
    x = 39,908.10

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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.