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Finding the Fourth Proportional to 52,703.90, 72,731.40 and 28,832.78

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Solution

The fourth proportional to 52,703.90, 72,731.40 and 28,832.78 is: 39,789.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,703.90 : 72,731.40 = 28,832.78 : x
  2. Step 2: Convert to fraction form
    52,703.90/72,731.40 = 28,832.78/x
  3. Step 3: Cross multiply
    52,703.90x = 72,731.40 × 28,832.78
  4. Step 4: Simplify right side
    52,703.90x = 2,097,048,455.29
  5. Step 5: Solve for x
    x = 2,097,048,455.29/52,703.90
  6. Step 6: Final answer
    x = 39,789.25

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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.