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Finding the Fourth Proportional to 47,870.80, 71,809.40 and 16,280.40

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Solution

The fourth proportional to 47,870.80, 71,809.40 and 16,280.40 is: 24,421.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,870.80 : 71,809.40 = 16,280.40 : x
  2. Step 2: Convert to fraction form
    47,870.80/71,809.40 = 16,280.40/x
  3. Step 3: Cross multiply
    47,870.80x = 71,809.40 × 16,280.40
  4. Step 4: Simplify right side
    47,870.80x = 1,169,085,755.76
  5. Step 5: Solve for x
    x = 1,169,085,755.76/47,870.80
  6. Step 6: Final answer
    x = 24,421.69

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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.