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Finding the Fourth Proportional to 65,384.99, 90,059.40 and 50,248.67

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Solution

The fourth proportional to 65,384.99, 90,059.40 and 50,248.67 is: 69,211.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,384.99 : 90,059.40 = 50,248.67 : x
  2. Step 2: Convert to fraction form
    65,384.99/90,059.40 = 50,248.67/x
  3. Step 3: Cross multiply
    65,384.99x = 90,059.40 × 50,248.67
  4. Step 4: Simplify right side
    65,384.99x = 4,525,364,620.70
  5. Step 5: Solve for x
    x = 4,525,364,620.70/65,384.99
  6. Step 6: Final answer
    x = 69,211.07

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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.