Home / 77,673.28-107,122.98-65,632.60

Finding the Fourth Proportional to 77,673.28, 107,122.98 and 65,632.60

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Solution

The fourth proportional to 77,673.28, 107,122.98 and 65,632.60 is: 90,517.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,673.28 : 107,122.98 = 65,632.60 : x
  2. Step 2: Convert to fraction form
    77,673.28/107,122.98 = 65,632.60/x
  3. Step 3: Cross multiply
    77,673.28x = 107,122.98 × 65,632.60
  4. Step 4: Simplify right side
    77,673.28x = 7,030,759,697.15
  5. Step 5: Solve for x
    x = 7,030,759,697.15/77,673.28
  6. Step 6: Final answer
    x = 90,517.10

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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.