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Finding the Fourth Proportional to 56,347.75, 84,550.79 and 28,645.75

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Solution

The fourth proportional to 56,347.75, 84,550.79 and 28,645.75 is: 42,983.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,347.75 : 84,550.79 = 28,645.75 : x
  2. Step 2: Convert to fraction form
    56,347.75/84,550.79 = 28,645.75/x
  3. Step 3: Cross multiply
    56,347.75x = 84,550.79 × 28,645.75
  4. Step 4: Simplify right side
    56,347.75x = 2,422,020,792.64
  5. Step 5: Solve for x
    x = 2,422,020,792.64/56,347.75
  6. Step 6: Final answer
    x = 42,983.45

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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.