Home / 90,988.58-136,497.72-28,644.50

Finding the Fourth Proportional to 90,988.58, 136,497.72 and 28,644.50

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Solution

The fourth proportional to 90,988.58, 136,497.72 and 28,644.50 is: 42,971.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,988.58 : 136,497.72 = 28,644.50 : x
  2. Step 2: Convert to fraction form
    90,988.58/136,497.72 = 28,644.50/x
  3. Step 3: Cross multiply
    90,988.58x = 136,497.72 × 28,644.50
  4. Step 4: Simplify right side
    90,988.58x = 3,909,908,940.54
  5. Step 5: Solve for x
    x = 3,909,908,940.54/90,988.58
  6. Step 6: Final answer
    x = 42,971.42

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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.