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Finding the Fourth Proportional to 85,679.70, 128,602.57 and 41,337.63

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Solution

The fourth proportional to 85,679.70, 128,602.57 and 41,337.63 is: 62,046.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,679.70 : 128,602.57 = 41,337.63 : x
  2. Step 2: Convert to fraction form
    85,679.70/128,602.57 = 41,337.63/x
  3. Step 3: Cross multiply
    85,679.70x = 128,602.57 × 41,337.63
  4. Step 4: Simplify right side
    85,679.70x = 5,316,125,455.71
  5. Step 5: Solve for x
    x = 5,316,125,455.71/85,679.70
  6. Step 6: Final answer
    x = 62,046.50

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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.