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Finding the Fourth Proportional to 54,615.60, 76,669.20 and 54,615.60

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Solution

The fourth proportional to 54,615.60, 76,669.20 and 54,615.60 is: 76,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,615.60 : 76,669.20 = 54,615.60 : x
  2. Step 2: Convert to fraction form
    54,615.60/76,669.20 = 54,615.60/x
  3. Step 3: Cross multiply
    54,615.60x = 76,669.20 × 54,615.60
  4. Step 4: Simplify right side
    54,615.60x = 4,187,334,359.52
  5. Step 5: Solve for x
    x = 4,187,334,359.52/54,615.60
  6. Step 6: Final answer
    x = 76,669.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.