Home / 89,820.40-134,730.60-61,826.80

Finding the Fourth Proportional to 89,820.40, 134,730.60 and 61,826.80

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Solution

The fourth proportional to 89,820.40, 134,730.60 and 61,826.80 is: 92,740.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,820.40 : 134,730.60 = 61,826.80 : x
  2. Step 2: Convert to fraction form
    89,820.40/134,730.60 = 61,826.80/x
  3. Step 3: Cross multiply
    89,820.40x = 134,730.60 × 61,826.80
  4. Step 4: Simplify right side
    89,820.40x = 8,329,961,860.08
  5. Step 5: Solve for x
    x = 8,329,961,860.08/89,820.40
  6. Step 6: Final answer
    x = 92,740.20

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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.