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Finding the Fourth Proportional to 45,671.78, 68,480.30 and 18,985.59

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Solution

The fourth proportional to 45,671.78, 68,480.30 and 18,985.59 is: 28,467.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,671.78 : 68,480.30 = 18,985.59 : x
  2. Step 2: Convert to fraction form
    45,671.78/68,480.30 = 18,985.59/x
  3. Step 3: Cross multiply
    45,671.78x = 68,480.30 × 18,985.59
  4. Step 4: Simplify right side
    45,671.78x = 1,300,138,946.34
  5. Step 5: Solve for x
    x = 1,300,138,946.34/45,671.78
  6. Step 6: Final answer
    x = 28,467.01

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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.