Home / 90,780.45-136,152.45-43,395.45

Finding the Fourth Proportional to 90,780.45, 136,152.45 and 43,395.45

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Solution

The fourth proportional to 90,780.45, 136,152.45 and 43,395.45 is: 65,084.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,780.45 : 136,152.45 = 43,395.45 : x
  2. Step 2: Convert to fraction form
    90,780.45/136,152.45 = 43,395.45/x
  3. Step 3: Cross multiply
    90,780.45x = 136,152.45 × 43,395.45
  4. Step 4: Simplify right side
    90,780.45x = 5,908,396,836.35
  5. Step 5: Solve for x
    x = 5,908,396,836.35/90,780.45
  6. Step 6: Final answer
    x = 65,084.46

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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.