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Finding the Fourth Proportional to 53,954.60, 80,931.90 and 30,237.80

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Solution

The fourth proportional to 53,954.60, 80,931.90 and 30,237.80 is: 45,356.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,954.60 : 80,931.90 = 30,237.80 : x
  2. Step 2: Convert to fraction form
    53,954.60/80,931.90 = 30,237.80/x
  3. Step 3: Cross multiply
    53,954.60x = 80,931.90 × 30,237.80
  4. Step 4: Simplify right side
    53,954.60x = 2,447,202,605.82
  5. Step 5: Solve for x
    x = 2,447,202,605.82/53,954.60
  6. Step 6: Final answer
    x = 45,356.70

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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.