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Finding the Fourth Proportional to 61,253.51, 84,543.62 and 40,020.57

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Solution

The fourth proportional to 61,253.51, 84,543.62 and 40,020.57 is: 55,237.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,253.51 : 84,543.62 = 40,020.57 : x
  2. Step 2: Convert to fraction form
    61,253.51/84,543.62 = 40,020.57/x
  3. Step 3: Cross multiply
    61,253.51x = 84,543.62 × 40,020.57
  4. Step 4: Simplify right side
    61,253.51x = 3,383,483,662.16
  5. Step 5: Solve for x
    x = 3,383,483,662.16/61,253.51
  6. Step 6: Final answer
    x = 55,237.39

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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.