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Finding the Fourth Proportional to 90,404.64, 124,756.74 and 49,568.76

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Solution

The fourth proportional to 90,404.64, 124,756.74 and 49,568.76 is: 68,403.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,404.64 : 124,756.74 = 49,568.76 : x
  2. Step 2: Convert to fraction form
    90,404.64/124,756.74 = 49,568.76/x
  3. Step 3: Cross multiply
    90,404.64x = 124,756.74 × 49,568.76
  4. Step 4: Simplify right side
    90,404.64x = 6,184,036,903.44
  5. Step 5: Solve for x
    x = 6,184,036,903.44/90,404.64
  6. Step 6: Final answer
    x = 68,403.98

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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.