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Finding the Fourth Proportional to 52,749.79, 72,794.84 and 28,878.01

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Solution

The fourth proportional to 52,749.79, 72,794.84 and 28,878.01 is: 39,851.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,749.79 : 72,794.84 = 28,878.01 : x
  2. Step 2: Convert to fraction form
    52,749.79/72,794.84 = 28,878.01/x
  3. Step 3: Cross multiply
    52,749.79x = 72,794.84 × 28,878.01
  4. Step 4: Simplify right side
    52,749.79x = 2,102,170,117.47
  5. Step 5: Solve for x
    x = 2,102,170,117.47/52,749.79
  6. Step 6: Final answer
    x = 39,851.72

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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.