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Finding the Fourth Proportional to 71,812.60, 107,735.06 and 21,897.74

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Solution

The fourth proportional to 71,812.60, 107,735.06 and 21,897.74 is: 32,851.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,812.60 : 107,735.06 = 21,897.74 : x
  2. Step 2: Convert to fraction form
    71,812.60/107,735.06 = 21,897.74/x
  3. Step 3: Cross multiply
    71,812.60x = 107,735.06 × 21,897.74
  4. Step 4: Simplify right side
    71,812.60x = 2,359,154,332.76
  5. Step 5: Solve for x
    x = 2,359,154,332.76/71,812.60
  6. Step 6: Final answer
    x = 32,851.54

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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.