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Finding the Fourth Proportional to 85,648.67, 118,192.59 and 47,409.78

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Solution

The fourth proportional to 85,648.67, 118,192.59 and 47,409.78 is: 65,424.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,648.67 : 118,192.59 = 47,409.78 : x
  2. Step 2: Convert to fraction form
    85,648.67/118,192.59 = 47,409.78/x
  3. Step 3: Cross multiply
    85,648.67x = 118,192.59 × 47,409.78
  4. Step 4: Simplify right side
    85,648.67x = 5,603,484,689.53
  5. Step 5: Solve for x
    x = 5,603,484,689.53/85,648.67
  6. Step 6: Final answer
    x = 65,424.07

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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.