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Finding the Fourth Proportional to 52,709.94, 72,744.72 and 28,840.20

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Solution

The fourth proportional to 52,709.94, 72,744.72 and 28,840.20 is: 39,802.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,709.94 : 72,744.72 = 28,840.20 : x
  2. Step 2: Convert to fraction form
    52,709.94/72,744.72 = 28,840.20/x
  3. Step 3: Cross multiply
    52,709.94x = 72,744.72 × 28,840.20
  4. Step 4: Simplify right side
    52,709.94x = 2,097,972,301.99
  5. Step 5: Solve for x
    x = 2,097,972,301.99/52,709.94
  6. Step 6: Final answer
    x = 39,802.21

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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.