Home / 61,621.64-84,998.72-40,402.28

Finding the Fourth Proportional to 61,621.64, 84,998.72 and 40,402.28

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Solution

The fourth proportional to 61,621.64, 84,998.72 and 40,402.28 is: 55,729.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,621.64 : 84,998.72 = 40,402.28 : x
  2. Step 2: Convert to fraction form
    61,621.64/84,998.72 = 40,402.28/x
  3. Step 3: Cross multiply
    61,621.64x = 84,998.72 × 40,402.28
  4. Step 4: Simplify right side
    61,621.64x = 3,434,142,085.08
  5. Step 5: Solve for x
    x = 3,434,142,085.08/61,621.64
  6. Step 6: Final answer
    x = 55,729.48

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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.