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Finding the Fourth Proportional to 101,026.63, 139,389.40 and 57,418.57

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Solution

The fourth proportional to 101,026.63, 139,389.40 and 57,418.57 is: 79,222.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,026.63 : 139,389.40 = 57,418.57 : x
  2. Step 2: Convert to fraction form
    101,026.63/139,389.40 = 57,418.57/x
  3. Step 3: Cross multiply
    101,026.63x = 139,389.40 × 57,418.57
  4. Step 4: Simplify right side
    101,026.63x = 8,003,540,021.16
  5. Step 5: Solve for x
    x = 8,003,540,021.16/101,026.63
  6. Step 6: Final answer
    x = 79,222.08

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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.