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Finding the Fourth Proportional to 71,032.95, 106,534.85 and 21,112.25

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Solution

The fourth proportional to 71,032.95, 106,534.85 and 21,112.25 is: 31,664.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,032.95 : 106,534.85 = 21,112.25 : x
  2. Step 2: Convert to fraction form
    71,032.95/106,534.85 = 21,112.25/x
  3. Step 3: Cross multiply
    71,032.95x = 106,534.85 × 21,112.25
  4. Step 4: Simplify right side
    71,032.95x = 2,249,189,748.68
  5. Step 5: Solve for x
    x = 2,249,189,748.68/71,032.95
  6. Step 6: Final answer
    x = 31,664.03

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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.