Home / 78,076.90-107,744.85-42,266.60

Finding the Fourth Proportional to 78,076.90, 107,744.85 and 42,266.60

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Solution

The fourth proportional to 78,076.90, 107,744.85 and 42,266.60 is: 58,327.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,076.90 : 107,744.85 = 42,266.60 : x
  2. Step 2: Convert to fraction form
    78,076.90/107,744.85 = 42,266.60/x
  3. Step 3: Cross multiply
    78,076.90x = 107,744.85 × 42,266.60
  4. Step 4: Simplify right side
    78,076.90x = 4,554,008,477.01
  5. Step 5: Solve for x
    x = 4,554,008,477.01/78,076.90
  6. Step 6: Final answer
    x = 58,327.22

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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.