Home / 77,148.20-115,722.30-37,730.60

Finding the Fourth Proportional to 77,148.20, 115,722.30 and 37,730.60

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Solution

The fourth proportional to 77,148.20, 115,722.30 and 37,730.60 is: 56,595.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,148.20 : 115,722.30 = 37,730.60 : x
  2. Step 2: Convert to fraction form
    77,148.20/115,722.30 = 37,730.60/x
  3. Step 3: Cross multiply
    77,148.20x = 115,722.30 × 37,730.60
  4. Step 4: Simplify right side
    77,148.20x = 4,366,271,812.38
  5. Step 5: Solve for x
    x = 4,366,271,812.38/77,148.20
  6. Step 6: Final answer
    x = 56,595.90

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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.