Home / 74,537.10-102,872.64-57,347.28

Finding the Fourth Proportional to 74,537.10, 102,872.64 and 57,347.28

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Solution

The fourth proportional to 74,537.10, 102,872.64 and 57,347.28 is: 79,148.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,537.10 : 102,872.64 = 57,347.28 : x
  2. Step 2: Convert to fraction form
    74,537.10/102,872.64 = 57,347.28/x
  3. Step 3: Cross multiply
    74,537.10x = 102,872.64 × 57,347.28
  4. Step 4: Simplify right side
    74,537.10x = 5,899,466,090.42
  5. Step 5: Solve for x
    x = 5,899,466,090.42/74,537.10
  6. Step 6: Final answer
    x = 79,148.05

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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.