Home / 90,480.42-135,674.24-47,808.76

Finding the Fourth Proportional to 90,480.42, 135,674.24 and 47,808.76

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Solution

The fourth proportional to 90,480.42, 135,674.24 and 47,808.76 is: 71,688.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,480.42 : 135,674.24 = 47,808.76 : x
  2. Step 2: Convert to fraction form
    90,480.42/135,674.24 = 47,808.76/x
  3. Step 3: Cross multiply
    90,480.42x = 135,674.24 × 47,808.76
  4. Step 4: Simplify right side
    90,480.42x = 6,486,417,178.34
  5. Step 5: Solve for x
    x = 6,486,417,178.34/90,480.42
  6. Step 6: Final answer
    x = 71,688.63

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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.