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Finding the Fourth Proportional to 56,717.79, 85,080.60 and 19,262.58

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Solution

The fourth proportional to 56,717.79, 85,080.60 and 19,262.58 is: 28,895.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,717.79 : 85,080.60 = 19,262.58 : x
  2. Step 2: Convert to fraction form
    56,717.79/85,080.60 = 19,262.58/x
  3. Step 3: Cross multiply
    56,717.79x = 85,080.60 × 19,262.58
  4. Step 4: Simplify right side
    56,717.79x = 1,638,871,863.95
  5. Step 5: Solve for x
    x = 1,638,871,863.95/56,717.79
  6. Step 6: Final answer
    x = 28,895.20

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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.