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Finding the Fourth Proportional to 61,287.52, 84,520.58 and 39,754.82

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Solution

The fourth proportional to 61,287.52, 84,520.58 and 39,754.82 is: 54,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,287.52 : 84,520.58 = 39,754.82 : x
  2. Step 2: Convert to fraction form
    61,287.52/84,520.58 = 39,754.82/x
  3. Step 3: Cross multiply
    61,287.52x = 84,520.58 × 39,754.82
  4. Step 4: Simplify right side
    61,287.52x = 3,360,100,444.20
  5. Step 5: Solve for x
    x = 3,360,100,444.20/61,287.52
  6. Step 6: Final answer
    x = 54,825.20

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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.