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Finding the Fourth Proportional to 65,438.84, 90,302.38 and 36,754.99

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Solution

The fourth proportional to 65,438.84, 90,302.38 and 36,754.99 is: 50,720.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,438.84 : 90,302.38 = 36,754.99 : x
  2. Step 2: Convert to fraction form
    65,438.84/90,302.38 = 36,754.99/x
  3. Step 3: Cross multiply
    65,438.84x = 90,302.38 × 36,754.99
  4. Step 4: Simplify right side
    65,438.84x = 3,319,062,756.23
  5. Step 5: Solve for x
    x = 3,319,062,756.23/65,438.84
  6. Step 6: Final answer
    x = 50,720.07

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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.