Home / 77,894,379.18-106,931,346.93-66,861,975.69

Finding the Fourth Proportional to 77,894,379.18, 106,931,346.93 and 66,861,975.69

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Solution

The fourth proportional to 77,894,379.18, 106,931,346.93 and 66,861,975.69 is: 91,786,354.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,894,379.18 : 106,931,346.93 = 66,861,975.69 : x
  2. Step 2: Convert to fraction form
    77,894,379.18/106,931,346.93 = 66,861,975.69/x
  3. Step 3: Cross multiply
    77,894,379.18x = 106,931,346.93 × 66,861,975.69
  4. Step 4: Simplify right side
    77,894,379.18x = 7,149,641,118,932,616
  5. Step 5: Solve for x
    x = 7,149,641,118,932,616/77,894,379.18
  6. Step 6: Final answer
    x = 91,786,354.73

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.