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Finding the Fourth Proportional to 56,090.71, 84,117.85 and 18,640.72

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Solution

The fourth proportional to 56,090.71, 84,117.85 and 18,640.72 is: 27,955.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,090.71 : 84,117.85 = 18,640.72 : x
  2. Step 2: Convert to fraction form
    56,090.71/84,117.85 = 18,640.72/x
  3. Step 3: Cross multiply
    56,090.71x = 84,117.85 × 18,640.72
  4. Step 4: Simplify right side
    56,090.71x = 1,568,017,288.85
  5. Step 5: Solve for x
    x = 1,568,017,288.85/56,090.71
  6. Step 6: Final answer
    x = 27,955.03

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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.