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Finding the Fourth Proportional to 55,073.94, 76,005.80 and 31,200.81

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Solution

The fourth proportional to 55,073.94, 76,005.80 and 31,200.81 is: 43,059.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,073.94 : 76,005.80 = 31,200.81 : x
  2. Step 2: Convert to fraction form
    55,073.94/76,005.80 = 31,200.81/x
  3. Step 3: Cross multiply
    55,073.94x = 76,005.80 × 31,200.81
  4. Step 4: Simplify right side
    55,073.94x = 2,371,442,368.69
  5. Step 5: Solve for x
    x = 2,371,442,368.69/55,073.94
  6. Step 6: Final answer
    x = 43,059.25

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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.