Home / 77,095.20-115,642.80-47,546.40

Finding the Fourth Proportional to 77,095.20, 115,642.80 and 47,546.40

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Solution

The fourth proportional to 77,095.20, 115,642.80 and 47,546.40 is: 71,319.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,095.20 : 115,642.80 = 47,546.40 : x
  2. Step 2: Convert to fraction form
    77,095.20/115,642.80 = 47,546.40/x
  3. Step 3: Cross multiply
    77,095.20x = 115,642.80 × 47,546.40
  4. Step 4: Simplify right side
    77,095.20x = 5,498,398,825.92
  5. Step 5: Solve for x
    x = 5,498,398,825.92/77,095.20
  6. Step 6: Final answer
    x = 71,319.60

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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.