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Finding the Fourth Proportional to 48,681.80, 73,022.70 and 13,621.40

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Solution

The fourth proportional to 48,681.80, 73,022.70 and 13,621.40 is: 20,432.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,681.80 : 73,022.70 = 13,621.40 : x
  2. Step 2: Convert to fraction form
    48,681.80/73,022.70 = 13,621.40/x
  3. Step 3: Cross multiply
    48,681.80x = 73,022.70 × 13,621.40
  4. Step 4: Simplify right side
    48,681.80x = 994,671,405.78
  5. Step 5: Solve for x
    x = 994,671,405.78/48,681.80
  6. Step 6: Final answer
    x = 20,432.10

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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.