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Finding the Fourth Proportional to 55,407.76, 83,485.64 and 45,763.08

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Solution

The fourth proportional to 55,407.76, 83,485.64 and 45,763.08 is: 68,953.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,407.76 : 83,485.64 = 45,763.08 : x
  2. Step 2: Convert to fraction form
    55,407.76/83,485.64 = 45,763.08/x
  3. Step 3: Cross multiply
    55,407.76x = 83,485.64 × 45,763.08
  4. Step 4: Simplify right side
    55,407.76x = 3,820,560,022.17
  5. Step 5: Solve for x
    x = 3,820,560,022.17/55,407.76
  6. Step 6: Final answer
    x = 68,953.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.