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Finding the Fourth Proportional to 90,102.51, 124,350.53 and 49,819.32

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Solution

The fourth proportional to 90,102.51, 124,350.53 and 49,819.32 is: 68,755.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,102.51 : 124,350.53 = 49,819.32 : x
  2. Step 2: Convert to fraction form
    90,102.51/124,350.53 = 49,819.32/x
  3. Step 3: Cross multiply
    90,102.51x = 124,350.53 × 49,819.32
  4. Step 4: Simplify right side
    90,102.51x = 6,195,058,597.14
  5. Step 5: Solve for x
    x = 6,195,058,597.14/90,102.51
  6. Step 6: Final answer
    x = 68,755.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.