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Finding the Fourth Proportional to 56,903.31, 85,365.95 and 21,840.23

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Solution

The fourth proportional to 56,903.31, 85,365.95 and 21,840.23 is: 32,764.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,903.31 : 85,365.95 = 21,840.23 : x
  2. Step 2: Convert to fraction form
    56,903.31/85,365.95 = 21,840.23/x
  3. Step 3: Cross multiply
    56,903.31x = 85,365.95 × 21,840.23
  4. Step 4: Simplify right side
    56,903.31x = 1,864,412,209.23
  5. Step 5: Solve for x
    x = 1,864,412,209.23/56,903.31
  6. Step 6: Final answer
    x = 32,764.57

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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.