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Finding the Fourth Proportional to 64,848.42, 89,475.59 and 39,354.22

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Solution

The fourth proportional to 64,848.42, 89,475.59 and 39,354.22 is: 54,299.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,848.42 : 89,475.59 = 39,354.22 : x
  2. Step 2: Convert to fraction form
    64,848.42/89,475.59 = 39,354.22/x
  3. Step 3: Cross multiply
    64,848.42x = 89,475.59 × 39,354.22
  4. Step 4: Simplify right side
    64,848.42x = 3,521,241,664.88
  5. Step 5: Solve for x
    x = 3,521,241,664.88/64,848.42
  6. Step 6: Final answer
    x = 54,299.57

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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.