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Finding the Fourth Proportional to 51,371.93, 70,893.01 and 28,710.90

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Solution

The fourth proportional to 51,371.93, 70,893.01 and 28,710.90 is: 39,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,371.93 : 70,893.01 = 28,710.90 : x
  2. Step 2: Convert to fraction form
    51,371.93/70,893.01 = 28,710.90/x
  3. Step 3: Cross multiply
    51,371.93x = 70,893.01 × 28,710.90
  4. Step 4: Simplify right side
    51,371.93x = 2,035,402,120.81
  5. Step 5: Solve for x
    x = 2,035,402,120.81/51,371.93
  6. Step 6: Final answer
    x = 39,620.90

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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.