Home / 90,400.48-135,506.58-30,384.40

Finding the Fourth Proportional to 90,400.48, 135,506.58 and 30,384.40

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Solution

The fourth proportional to 90,400.48, 135,506.58 and 30,384.40 is: 45,544.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,400.48 : 135,506.58 = 30,384.40 : x
  2. Step 2: Convert to fraction form
    90,400.48/135,506.58 = 30,384.40/x
  3. Step 3: Cross multiply
    90,400.48x = 135,506.58 × 30,384.40
  4. Step 4: Simplify right side
    90,400.48x = 4,117,286,129.35
  5. Step 5: Solve for x
    x = 4,117,286,129.35/90,400.48
  6. Step 6: Final answer
    x = 45,544.96

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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.