Home / 56,720.60-85,113.30-21,685.40

Finding the Fourth Proportional to 56,720.60, 85,113.30 and 21,685.40

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Solution

The fourth proportional to 56,720.60, 85,113.30 and 21,685.40 is: 32,540.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,720.60 : 85,113.30 = 21,685.40 : x
  2. Step 2: Convert to fraction form
    56,720.60/85,113.30 = 21,685.40/x
  3. Step 3: Cross multiply
    56,720.60x = 85,113.30 × 21,685.40
  4. Step 4: Simplify right side
    56,720.60x = 1,845,715,955.82
  5. Step 5: Solve for x
    x = 1,845,715,955.82/56,720.60
  6. Step 6: Final answer
    x = 32,540.49

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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.