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Finding the Fourth Proportional to 55,931.81, 83,879.84 and 18,484.89

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Solution

The fourth proportional to 55,931.81, 83,879.84 and 18,484.89 is: 27,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,931.81 : 83,879.84 = 18,484.89 : x
  2. Step 2: Convert to fraction form
    55,931.81/83,879.84 = 18,484.89/x
  3. Step 3: Cross multiply
    55,931.81x = 83,879.84 × 18,484.89
  4. Step 4: Simplify right side
    55,931.81x = 1,550,509,523.19
  5. Step 5: Solve for x
    x = 1,550,509,523.19/55,931.81
  6. Step 6: Final answer
    x = 27,721.43

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1.5x scale

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.