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Finding the Fourth Proportional to 77,015.60, 115,523.40 and 65,740.40

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Solution

The fourth proportional to 77,015.60, 115,523.40 and 65,740.40 is: 98,610.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,015.60 : 115,523.40 = 65,740.40 : x
  2. Step 2: Convert to fraction form
    77,015.60/115,523.40 = 65,740.40/x
  3. Step 3: Cross multiply
    77,015.60x = 115,523.40 × 65,740.40
  4. Step 4: Simplify right side
    77,015.60x = 7,594,554,525.36
  5. Step 5: Solve for x
    x = 7,594,554,525.36/77,015.60
  6. Step 6: Final answer
    x = 98,610.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.