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Finding the Fourth Proportional to 69,842.34, 96,384.60 and 39,628.94

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Solution

The fourth proportional to 69,842.34, 96,384.60 and 39,628.94 is: 54,689.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,842.34 : 96,384.60 = 39,628.94 : x
  2. Step 2: Convert to fraction form
    69,842.34/96,384.60 = 39,628.94/x
  3. Step 3: Cross multiply
    69,842.34x = 96,384.60 × 39,628.94
  4. Step 4: Simplify right side
    69,842.34x = 3,819,619,048.40
  5. Step 5: Solve for x
    x = 3,819,619,048.40/69,842.34
  6. Step 6: Final answer
    x = 54,689.16

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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.