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Finding the Fourth Proportional to 64,245.64, 88,684.74 and 42,438.76

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Solution

The fourth proportional to 64,245.64, 88,684.74 and 42,438.76 is: 58,582.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,245.64 : 88,684.74 = 42,438.76 : x
  2. Step 2: Convert to fraction form
    64,245.64/88,684.74 = 42,438.76/x
  3. Step 3: Cross multiply
    64,245.64x = 88,684.74 × 42,438.76
  4. Step 4: Simplify right side
    64,245.64x = 3,763,670,396.52
  5. Step 5: Solve for x
    x = 3,763,670,396.52/64,245.64
  6. Step 6: Final answer
    x = 58,582.50

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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.