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Finding the Fourth Proportional to 57,674.60, 86,511.90 and 42,912.35

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Solution

The fourth proportional to 57,674.60, 86,511.90 and 42,912.35 is: 64,368.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,674.60 : 86,511.90 = 42,912.35 : x
  2. Step 2: Convert to fraction form
    57,674.60/86,511.90 = 42,912.35/x
  3. Step 3: Cross multiply
    57,674.60x = 86,511.90 × 42,912.35
  4. Step 4: Simplify right side
    57,674.60x = 3,712,428,931.97
  5. Step 5: Solve for x
    x = 3,712,428,931.97/57,674.60
  6. Step 6: Final answer
    x = 64,368.53

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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.