Home / 90,448.12-135,630.06-53,019.64

Finding the Fourth Proportional to 90,448.12, 135,630.06 and 53,019.64

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Solution

The fourth proportional to 90,448.12, 135,630.06 and 53,019.64 is: 79,504.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,448.12 : 135,630.06 = 53,019.64 : x
  2. Step 2: Convert to fraction form
    90,448.12/135,630.06 = 53,019.64/x
  3. Step 3: Cross multiply
    90,448.12x = 135,630.06 × 53,019.64
  4. Step 4: Simplify right side
    90,448.12x = 7,191,056,954.38
  5. Step 5: Solve for x
    x = 7,191,056,954.38/90,448.12
  6. Step 6: Final answer
    x = 79,504.77

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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.