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Finding the Fourth Proportional to 54,280.94, 74,909.80 and 30,407.80

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Solution

The fourth proportional to 54,280.94, 74,909.80 and 30,407.80 is: 41,963.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,280.94 : 74,909.80 = 30,407.80 : x
  2. Step 2: Convert to fraction form
    54,280.94/74,909.80 = 30,407.80/x
  3. Step 3: Cross multiply
    54,280.94x = 74,909.80 × 30,407.80
  4. Step 4: Simplify right side
    54,280.94x = 2,277,842,216.44
  5. Step 5: Solve for x
    x = 2,277,842,216.44/54,280.94
  6. Step 6: Final answer
    x = 41,963.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.