Home / 90,550.40-135,838.54-28,225.76

Finding the Fourth Proportional to 90,550.40, 135,838.54 and 28,225.76

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Solution

The fourth proportional to 90,550.40, 135,838.54 and 28,225.76 is: 42,342.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,550.40 : 135,838.54 = 28,225.76 : x
  2. Step 2: Convert to fraction form
    90,550.40/135,838.54 = 28,225.76/x
  3. Step 3: Cross multiply
    90,550.40x = 135,838.54 × 28,225.76
  4. Step 4: Simplify right side
    90,550.40x = 3,834,146,028.79
  5. Step 5: Solve for x
    x = 3,834,146,028.79/90,550.40
  6. Step 6: Final answer
    x = 42,342.67

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1.5x scale

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.