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Finding the Fourth Proportional to 56,090.71, 84,111.41 and 21,005.76

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Solution

The fourth proportional to 56,090.71, 84,111.41 and 21,005.76 is: 31,499.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,090.71 : 84,111.41 = 21,005.76 : x
  2. Step 2: Convert to fraction form
    56,090.71/84,111.41 = 21,005.76/x
  3. Step 3: Cross multiply
    56,090.71x = 84,111.41 × 21,005.76
  4. Step 4: Simplify right side
    56,090.71x = 1,766,824,144.24
  5. Step 5: Solve for x
    x = 1,766,824,144.24/56,090.71
  6. Step 6: Final answer
    x = 31,499.41

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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.