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Finding the Fourth Proportional to 47,612.80, 71,443.50 and 19,554.40

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Solution

The fourth proportional to 47,612.80, 71,443.50 and 19,554.40 is: 29,341.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,612.80 : 71,443.50 = 19,554.40 : x
  2. Step 2: Convert to fraction form
    47,612.80/71,443.50 = 19,554.40/x
  3. Step 3: Cross multiply
    47,612.80x = 71,443.50 × 19,554.40
  4. Step 4: Simplify right side
    47,612.80x = 1,397,034,776.40
  5. Step 5: Solve for x
    x = 1,397,034,776.40/47,612.80
  6. Step 6: Final answer
    x = 29,341.58

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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.