Home / 56,741.64-85,118.63-21,220

Finding the Fourth Proportional to 56,741.64, 85,118.63 and 21,220

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Solution

The fourth proportional to 56,741.64, 85,118.63 and 21,220 is: 31,832.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,741.64 : 85,118.63 = 21,220 : x
  2. Step 2: Convert to fraction form
    56,741.64/85,118.63 = 21,220/x
  3. Step 3: Cross multiply
    56,741.64x = 85,118.63 × 21,220
  4. Step 4: Simplify right side
    56,741.64x = 1,806,217,328.60
  5. Step 5: Solve for x
    x = 1,806,217,328.60/56,741.64
  6. Step 6: Final answer
    x = 31,832.31

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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.