Home / 90,403.08-135,602.34-31,233.12

Finding the Fourth Proportional to 90,403.08, 135,602.34 and 31,233.12

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Solution

The fourth proportional to 90,403.08, 135,602.34 and 31,233.12 is: 46,848.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,403.08 : 135,602.34 = 31,233.12 : x
  2. Step 2: Convert to fraction form
    90,403.08/135,602.34 = 31,233.12/x
  3. Step 3: Cross multiply
    90,403.08x = 135,602.34 × 31,233.12
  4. Step 4: Simplify right side
    90,403.08x = 4,235,284,157.50
  5. Step 5: Solve for x
    x = 4,235,284,157.50/90,403.08
  6. Step 6: Final answer
    x = 46,848.89

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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.