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Finding the Fourth Proportional to 56,661.20, 84,991.80 and 25,557.20

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Solution

The fourth proportional to 56,661.20, 84,991.80 and 25,557.20 is: 38,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,661.20 : 84,991.80 = 25,557.20 : x
  2. Step 2: Convert to fraction form
    56,661.20/84,991.80 = 25,557.20/x
  3. Step 3: Cross multiply
    56,661.20x = 84,991.80 × 25,557.20
  4. Step 4: Simplify right side
    56,661.20x = 2,172,152,430.96
  5. Step 5: Solve for x
    x = 2,172,152,430.96/56,661.20
  6. Step 6: Final answer
    x = 38,335.80

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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.