Home / 90,827.49-136,242-31,663.05

Finding the Fourth Proportional to 90,827.49, 136,242 and 31,663.05

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Solution

The fourth proportional to 90,827.49, 136,242 and 31,663.05 is: 47,494.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,827.49 : 136,242 = 31,663.05 : x
  2. Step 2: Convert to fraction form
    90,827.49/136,242 = 31,663.05/x
  3. Step 3: Cross multiply
    90,827.49x = 136,242 × 31,663.05
  4. Step 4: Simplify right side
    90,827.49x = 4,313,837,258.10
  5. Step 5: Solve for x
    x = 4,313,837,258.10/90,827.49
  6. Step 6: Final answer
    x = 47,494.84

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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.