Home / 47,769.20-71,653.80-12,712.40

Finding the Fourth Proportional to 47,769.20, 71,653.80 and 12,712.40

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Solution

The fourth proportional to 47,769.20, 71,653.80 and 12,712.40 is: 19,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,769.20 : 71,653.80 = 12,712.40 : x
  2. Step 2: Convert to fraction form
    47,769.20/71,653.80 = 12,712.40/x
  3. Step 3: Cross multiply
    47,769.20x = 71,653.80 × 12,712.40
  4. Step 4: Simplify right side
    47,769.20x = 910,891,767.12
  5. Step 5: Solve for x
    x = 910,891,767.12/47,769.20
  6. Step 6: Final answer
    x = 19,068.60

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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.