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Finding the Fourth Proportional to 55,485.54, 76,572 and 31,615.92

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Solution

The fourth proportional to 55,485.54, 76,572 and 31,615.92 is: 43,631.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,485.54 : 76,572 = 31,615.92 : x
  2. Step 2: Convert to fraction form
    55,485.54/76,572 = 31,615.92/x
  3. Step 3: Cross multiply
    55,485.54x = 76,572 × 31,615.92
  4. Step 4: Simplify right side
    55,485.54x = 2,420,894,226.24
  5. Step 5: Solve for x
    x = 2,420,894,226.24/55,485.54
  6. Step 6: Final answer
    x = 43,631.08

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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.