Home / 77,605.10-116,429.13-30,890.78

Finding the Fourth Proportional to 77,605.10, 116,429.13 and 30,890.78

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Solution

The fourth proportional to 77,605.10, 116,429.13 and 30,890.78 is: 46,344.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,605.10 : 116,429.13 = 30,890.78 : x
  2. Step 2: Convert to fraction form
    77,605.10/116,429.13 = 30,890.78/x
  3. Step 3: Cross multiply
    77,605.10x = 116,429.13 × 30,890.78
  4. Step 4: Simplify right side
    77,605.10x = 3,596,586,058.28
  5. Step 5: Solve for x
    x = 3,596,586,058.28/77,605.10
  6. Step 6: Final answer
    x = 46,344.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.