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Finding the Fourth Proportional to 65,629.19, 90,536.76 and 42,958.19

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Solution

The fourth proportional to 65,629.19, 90,536.76 and 42,958.19 is: 59,261.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,629.19 : 90,536.76 = 42,958.19 : x
  2. Step 2: Convert to fraction form
    65,629.19/90,536.76 = 42,958.19/x
  3. Step 3: Cross multiply
    65,629.19x = 90,536.76 × 42,958.19
  4. Step 4: Simplify right side
    65,629.19x = 3,889,294,885.38
  5. Step 5: Solve for x
    x = 3,889,294,885.38/65,629.19
  6. Step 6: Final answer
    x = 59,261.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.