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Finding the Fourth Proportional to 52,754.40, 72,910.80 and 42,256.80

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Solution

The fourth proportional to 52,754.40, 72,910.80 and 42,256.80 is: 58,402.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,754.40 : 72,910.80 = 42,256.80 : x
  2. Step 2: Convert to fraction form
    52,754.40/72,910.80 = 42,256.80/x
  3. Step 3: Cross multiply
    52,754.40x = 72,910.80 × 42,256.80
  4. Step 4: Simplify right side
    52,754.40x = 3,080,977,093.44
  5. Step 5: Solve for x
    x = 3,080,977,093.44/52,754.40
  6. Step 6: Final answer
    x = 58,402.28

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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.