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Finding the Fourth Proportional to 57,127.79, 85,690.76 and 15,574.79

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Solution

The fourth proportional to 57,127.79, 85,690.76 and 15,574.79 is: 23,361.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,127.79 : 85,690.76 = 15,574.79 : x
  2. Step 2: Convert to fraction form
    57,127.79/85,690.76 = 15,574.79/x
  3. Step 3: Cross multiply
    57,127.79x = 85,690.76 × 15,574.79
  4. Step 4: Simplify right side
    57,127.79x = 1,334,615,163.49
  5. Step 5: Solve for x
    x = 1,334,615,163.49/57,127.79
  6. Step 6: Final answer
    x = 23,361.93

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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.