Home / 98,420.37-147,408.60-45,718.95

Finding the Fourth Proportional to 98,420.37, 147,408.60 and 45,718.95

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Solution

The fourth proportional to 98,420.37, 147,408.60 and 45,718.95 is: 68,475.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,420.37 : 147,408.60 = 45,718.95 : x
  2. Step 2: Convert to fraction form
    98,420.37/147,408.60 = 45,718.95/x
  3. Step 3: Cross multiply
    98,420.37x = 147,408.60 × 45,718.95
  4. Step 4: Simplify right side
    98,420.37x = 6,739,366,412.97
  5. Step 5: Solve for x
    x = 6,739,366,412.97/98,420.37
  6. Step 6: Final answer
    x = 68,475.32

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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.