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Finding the Fourth Proportional to 64,798.70, 89,438.88 and 42,194.12

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Solution

The fourth proportional to 64,798.70, 89,438.88 and 42,194.12 is: 58,238.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,798.70 : 89,438.88 = 42,194.12 : x
  2. Step 2: Convert to fraction form
    64,798.70/89,438.88 = 42,194.12/x
  3. Step 3: Cross multiply
    64,798.70x = 89,438.88 × 42,194.12
  4. Step 4: Simplify right side
    64,798.70x = 3,773,794,835.39
  5. Step 5: Solve for x
    x = 3,773,794,835.39/64,798.70
  6. Step 6: Final answer
    x = 58,238.74

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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.