Home / 77,164.20-115,746.30-45,541.80

Finding the Fourth Proportional to 77,164.20, 115,746.30 and 45,541.80

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Solution

The fourth proportional to 77,164.20, 115,746.30 and 45,541.80 is: 68,312.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,164.20 : 115,746.30 = 45,541.80 : x
  2. Step 2: Convert to fraction form
    77,164.20/115,746.30 = 45,541.80/x
  3. Step 3: Cross multiply
    77,164.20x = 115,746.30 × 45,541.80
  4. Step 4: Simplify right side
    77,164.20x = 5,271,294,845.34
  5. Step 5: Solve for x
    x = 5,271,294,845.34/77,164.20
  6. Step 6: Final answer
    x = 68,312.70

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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.