Home / 90,980.11-136,494.87-51,564.90

Finding the Fourth Proportional to 90,980.11, 136,494.87 and 51,564.90

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Solution

The fourth proportional to 90,980.11, 136,494.87 and 51,564.90 is: 77,361.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,980.11 : 136,494.87 = 51,564.90 : x
  2. Step 2: Convert to fraction form
    90,980.11/136,494.87 = 51,564.90/x
  3. Step 3: Cross multiply
    90,980.11x = 136,494.87 × 51,564.90
  4. Step 4: Simplify right side
    90,980.11x = 7,038,344,322.06
  5. Step 5: Solve for x
    x = 7,038,344,322.06/90,980.11
  6. Step 6: Final answer
    x = 77,361.35

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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.