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Finding the Fourth Proportional to 50,710.40, 75,968.72 and 28,456.32

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Solution

The fourth proportional to 50,710.40, 75,968.72 and 28,456.32 is: 42,630.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,710.40 : 75,968.72 = 28,456.32 : x
  2. Step 2: Convert to fraction form
    50,710.40/75,968.72 = 28,456.32/x
  3. Step 3: Cross multiply
    50,710.40x = 75,968.72 × 28,456.32
  4. Step 4: Simplify right side
    50,710.40x = 2,161,790,206.31
  5. Step 5: Solve for x
    x = 2,161,790,206.31/50,710.40
  6. Step 6: Final answer
    x = 42,630.12

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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.