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Finding the Fourth Proportional to 85,951.34, 128,926.82 and 48,494.40

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Solution

The fourth proportional to 85,951.34, 128,926.82 and 48,494.40 is: 72,741.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,951.34 : 128,926.82 = 48,494.40 : x
  2. Step 2: Convert to fraction form
    85,951.34/128,926.82 = 48,494.40/x
  3. Step 3: Cross multiply
    85,951.34x = 128,926.82 × 48,494.40
  4. Step 4: Simplify right side
    85,951.34x = 6,252,228,537.34
  5. Step 5: Solve for x
    x = 6,252,228,537.34/85,951.34
  6. Step 6: Final answer
    x = 72,741.49

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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.