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Finding the Fourth Proportional to 67,970.63, 93,778.31 and 39,279.84

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Solution

The fourth proportional to 67,970.63, 93,778.31 and 39,279.84 is: 54,193.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,970.63 : 93,778.31 = 39,279.84 : x
  2. Step 2: Convert to fraction form
    67,970.63/93,778.31 = 39,279.84/x
  3. Step 3: Cross multiply
    67,970.63x = 93,778.31 × 39,279.84
  4. Step 4: Simplify right side
    67,970.63x = 3,683,596,464.20
  5. Step 5: Solve for x
    x = 3,683,596,464.20/67,970.63
  6. Step 6: Final answer
    x = 54,193.94

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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.