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Finding the Fourth Proportional to 85,607.89, 118,142.37 and 47,366.83

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Solution

The fourth proportional to 85,607.89, 118,142.37 and 47,366.83 is: 65,368.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,607.89 : 118,142.37 = 47,366.83 : x
  2. Step 2: Convert to fraction form
    85,607.89/118,142.37 = 47,366.83/x
  3. Step 3: Cross multiply
    85,607.89x = 118,142.37 × 47,366.83
  4. Step 4: Simplify right side
    85,607.89x = 5,596,029,171.93
  5. Step 5: Solve for x
    x = 5,596,029,171.93/85,607.89
  6. Step 6: Final answer
    x = 65,368.15

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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.