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Finding the Fourth Proportional to 70,907.60, 97,845.96 and 40,686.80

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Solution

The fourth proportional to 70,907.60, 97,845.96 and 40,686.80 is: 56,144.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,907.60 : 97,845.96 = 40,686.80 : x
  2. Step 2: Convert to fraction form
    70,907.60/97,845.96 = 40,686.80/x
  3. Step 3: Cross multiply
    70,907.60x = 97,845.96 × 40,686.80
  4. Step 4: Simplify right side
    70,907.60x = 3,981,039,005.33
  5. Step 5: Solve for x
    x = 3,981,039,005.33/70,907.60
  6. Step 6: Final answer
    x = 56,144.04

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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.