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Finding the Fourth Proportional to 45,336.40, 67,980.30 and 19,011.40

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Solution

The fourth proportional to 45,336.40, 67,980.30 and 19,011.40 is: 28,506.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,336.40 : 67,980.30 = 19,011.40 : x
  2. Step 2: Convert to fraction form
    45,336.40/67,980.30 = 19,011.40/x
  3. Step 3: Cross multiply
    45,336.40x = 67,980.30 × 19,011.40
  4. Step 4: Simplify right side
    45,336.40x = 1,292,400,675.42
  5. Step 5: Solve for x
    x = 1,292,400,675.42/45,336.40
  6. Step 6: Final answer
    x = 28,506.91

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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.