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Finding the Fourth Proportional to 74,393.60, 102,680.84 and 42,580.84

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Solution

The fourth proportional to 74,393.60, 102,680.84 and 42,580.84 is: 58,771.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,393.60 : 102,680.84 = 42,580.84 : x
  2. Step 2: Convert to fraction form
    74,393.60/102,680.84 = 42,580.84/x
  3. Step 3: Cross multiply
    74,393.60x = 102,680.84 × 42,580.84
  4. Step 4: Simplify right side
    74,393.60x = 4,372,236,419.11
  5. Step 5: Solve for x
    x = 4,372,236,419.11/74,393.60
  6. Step 6: Final answer
    x = 58,771.67

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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.