Home / 74,558.72-102,893.12-40,569.28

Finding the Fourth Proportional to 74,558.72, 102,893.12 and 40,569.28

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Solution

The fourth proportional to 74,558.72, 102,893.12 and 40,569.28 is: 55,986.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,558.72 : 102,893.12 = 40,569.28 : x
  2. Step 2: Convert to fraction form
    74,558.72/102,893.12 = 40,569.28/x
  3. Step 3: Cross multiply
    74,558.72x = 102,893.12 × 40,569.28
  4. Step 4: Simplify right side
    74,558.72x = 4,174,299,795.35
  5. Step 5: Solve for x
    x = 4,174,299,795.35/74,558.72
  6. Step 6: Final answer
    x = 55,986.74

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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.