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Finding the Fourth Proportional to 53,487.88, 73,840.02 and 34,640.20

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Solution

The fourth proportional to 53,487.88, 73,840.02 and 34,640.20 is: 47,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,487.88 : 73,840.02 = 34,640.20 : x
  2. Step 2: Convert to fraction form
    53,487.88/73,840.02 = 34,640.20/x
  3. Step 3: Cross multiply
    53,487.88x = 73,840.02 × 34,640.20
  4. Step 4: Simplify right side
    53,487.88x = 2,557,833,060.80
  5. Step 5: Solve for x
    x = 2,557,833,060.80/53,487.88
  6. Step 6: Final answer
    x = 47,820.80

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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.