Home / 90,988.08-136,496.97-28,644

Finding the Fourth Proportional to 90,988.08, 136,496.97 and 28,644

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Solution

The fourth proportional to 90,988.08, 136,496.97 and 28,644 is: 42,970.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,988.08 : 136,496.97 = 28,644 : x
  2. Step 2: Convert to fraction form
    90,988.08/136,496.97 = 28,644/x
  3. Step 3: Cross multiply
    90,988.08x = 136,496.97 × 28,644
  4. Step 4: Simplify right side
    90,988.08x = 3,909,819,208.68
  5. Step 5: Solve for x
    x = 3,909,819,208.68/90,988.08
  6. Step 6: Final answer
    x = 42,970.67

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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.