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Finding the Fourth Proportional to 48,636.80, 72,955.20 and 13,576.40

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Solution

The fourth proportional to 48,636.80, 72,955.20 and 13,576.40 is: 20,364.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,636.80 : 72,955.20 = 13,576.40 : x
  2. Step 2: Convert to fraction form
    48,636.80/72,955.20 = 13,576.40/x
  3. Step 3: Cross multiply
    48,636.80x = 72,955.20 × 13,576.40
  4. Step 4: Simplify right side
    48,636.80x = 990,468,977.28
  5. Step 5: Solve for x
    x = 990,468,977.28/48,636.80
  6. Step 6: Final answer
    x = 20,364.60

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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.