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Finding the Fourth Proportional to 48,011.80, 72,017.70 and 18,827.80

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Solution

The fourth proportional to 48,011.80, 72,017.70 and 18,827.80 is: 28,241.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,011.80 : 72,017.70 = 18,827.80 : x
  2. Step 2: Convert to fraction form
    48,011.80/72,017.70 = 18,827.80/x
  3. Step 3: Cross multiply
    48,011.80x = 72,017.70 × 18,827.80
  4. Step 4: Simplify right side
    48,011.80x = 1,355,934,852.06
  5. Step 5: Solve for x
    x = 1,355,934,852.06/48,011.80
  6. Step 6: Final answer
    x = 28,241.70

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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.