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Finding the Fourth Proportional to 56,720.79, 85,130.36 and 56,589.57

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Solution

The fourth proportional to 56,720.79, 85,130.36 and 56,589.57 is: 84,933.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,720.79 : 85,130.36 = 56,589.57 : x
  2. Step 2: Convert to fraction form
    56,720.79/85,130.36 = 56,589.57/x
  3. Step 3: Cross multiply
    56,720.79x = 85,130.36 × 56,589.57
  4. Step 4: Simplify right side
    56,720.79x = 4,817,490,183.40
  5. Step 5: Solve for x
    x = 4,817,490,183.40/56,720.79
  6. Step 6: Final answer
    x = 84,933.41

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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.