Home / 85,864.49-128,629.95-48,310.05

Finding the Fourth Proportional to 85,864.49, 128,629.95 and 48,310.05

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Solution

The fourth proportional to 85,864.49, 128,629.95 and 48,310.05 is: 72,371.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,864.49 : 128,629.95 = 48,310.05 : x
  2. Step 2: Convert to fraction form
    85,864.49/128,629.95 = 48,310.05/x
  3. Step 3: Cross multiply
    85,864.49x = 128,629.95 × 48,310.05
  4. Step 4: Simplify right side
    85,864.49x = 6,214,119,316.00
  5. Step 5: Solve for x
    x = 6,214,119,316.00/85,864.49
  6. Step 6: Final answer
    x = 72,371.24

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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.