Home / 90,426.72-135,647.64-31,238.40

Finding the Fourth Proportional to 90,426.72, 135,647.64 and 31,238.40

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Solution

The fourth proportional to 90,426.72, 135,647.64 and 31,238.40 is: 46,860.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,426.72 : 135,647.64 = 31,238.40 : x
  2. Step 2: Convert to fraction form
    90,426.72/135,647.64 = 31,238.40/x
  3. Step 3: Cross multiply
    90,426.72x = 135,647.64 × 31,238.40
  4. Step 4: Simplify right side
    90,426.72x = 4,237,415,237.38
  5. Step 5: Solve for x
    x = 4,237,415,237.38/90,426.72
  6. Step 6: Final answer
    x = 46,860.21

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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.