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Finding the Fourth Proportional to 85,800.49, 128,745.60 and 62,302.15

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Solution

The fourth proportional to 85,800.49, 128,745.60 and 62,302.15 is: 93,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,800.49 : 128,745.60 = 62,302.15 : x
  2. Step 2: Convert to fraction form
    85,800.49/128,745.60 = 62,302.15/x
  3. Step 3: Cross multiply
    85,800.49x = 128,745.60 × 62,302.15
  4. Step 4: Simplify right side
    85,800.49x = 8,021,127,683.04
  5. Step 5: Solve for x
    x = 8,021,127,683.04/85,800.49
  6. Step 6: Final answer
    x = 93,485.80

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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.