Home / 74,135.74-102,314.64-42,309.42

Finding the Fourth Proportional to 74,135.74, 102,314.64 and 42,309.42

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Solution

The fourth proportional to 74,135.74, 102,314.64 and 42,309.42 is: 58,391.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,135.74 : 102,314.64 = 42,309.42 : x
  2. Step 2: Convert to fraction form
    74,135.74/102,314.64 = 42,309.42/x
  3. Step 3: Cross multiply
    74,135.74x = 102,314.64 × 42,309.42
  4. Step 4: Simplify right side
    74,135.74x = 4,328,873,075.91
  5. Step 5: Solve for x
    x = 4,328,873,075.91/74,135.74
  6. Step 6: Final answer
    x = 58,391.18

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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.