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Finding the Fourth Proportional to 55,324, 76,347.12 and 30,173.68

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Solution

The fourth proportional to 55,324, 76,347.12 and 30,173.68 is: 41,639.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,324 : 76,347.12 = 30,173.68 : x
  2. Step 2: Convert to fraction form
    55,324/76,347.12 = 30,173.68/x
  3. Step 3: Cross multiply
    55,324x = 76,347.12 × 30,173.68
  4. Step 4: Simplify right side
    55,324x = 2,303,673,567.80
  5. Step 5: Solve for x
    x = 2,303,673,567.80/55,324
  6. Step 6: Final answer
    x = 41,639.68

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Double scale
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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.