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Finding the Fourth Proportional to 31,073.60, 46,606.80 and 8,890.40

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Solution

The fourth proportional to 31,073.60, 46,606.80 and 8,890.40 is: 13,334.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,073.60 : 46,606.80 = 8,890.40 : x
  2. Step 2: Convert to fraction form
    31,073.60/46,606.80 = 8,890.40/x
  3. Step 3: Cross multiply
    31,073.60x = 46,606.80 × 8,890.40
  4. Step 4: Simplify right side
    31,073.60x = 414,353,094.72
  5. Step 5: Solve for x
    x = 414,353,094.72/31,073.60
  6. Step 6: Final answer
    x = 13,334.57

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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.