Home / 77,379,580.80-115,969,838.40-47,055,254.40

Finding the Fourth Proportional to 77,379,580.80, 115,969,838.40 and 47,055,254.40

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Solution

The fourth proportional to 77,379,580.80, 115,969,838.40 and 47,055,254.40 is: 70,522,354.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,379,580.80 : 115,969,838.40 = 47,055,254.40 : x
  2. Step 2: Convert to fraction form
    77,379,580.80/115,969,838.40 = 47,055,254.40/x
  3. Step 3: Cross multiply
    77,379,580.80x = 115,969,838.40 × 47,055,254.40
  4. Step 4: Simplify right side
    77,379,580.80x = 5,456,990,248,638,889
  5. Step 5: Solve for x
    x = 5,456,990,248,638,889/77,379,580.80
  6. Step 6: Final answer
    x = 70,522,354.76

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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.