Home / 77,931.20-116,907.60-27,999.20

Finding the Fourth Proportional to 77,931.20, 116,907.60 and 27,999.20

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Solution

The fourth proportional to 77,931.20, 116,907.60 and 27,999.20 is: 42,002.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,931.20 : 116,907.60 = 27,999.20 : x
  2. Step 2: Convert to fraction form
    77,931.20/116,907.60 = 27,999.20/x
  3. Step 3: Cross multiply
    77,931.20x = 116,907.60 × 27,999.20
  4. Step 4: Simplify right side
    77,931.20x = 3,273,319,273.92
  5. Step 5: Solve for x
    x = 3,273,319,273.92/77,931.20
  6. Step 6: Final answer
    x = 42,002.68

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1.5x scale

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.