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Finding the Fourth Proportional to 84,650.40, 126,784.80 and 65,783.52

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Solution

The fourth proportional to 84,650.40, 126,784.80 and 65,783.52 is: 98,527.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,650.40 : 126,784.80 = 65,783.52 : x
  2. Step 2: Convert to fraction form
    84,650.40/126,784.80 = 65,783.52/x
  3. Step 3: Cross multiply
    84,650.40x = 126,784.80 × 65,783.52
  4. Step 4: Simplify right side
    84,650.40x = 8,340,350,426.50
  5. Step 5: Solve for x
    x = 8,340,350,426.50/84,650.40
  6. Step 6: Final answer
    x = 98,527.01

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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.