Home / 77,894,367.15-106,931,330.45-66,861,963.66

Finding the Fourth Proportional to 77,894,367.15, 106,931,330.45 and 66,861,963.66

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Solution

The fourth proportional to 77,894,367.15, 106,931,330.45 and 66,861,963.66 is: 91,786,338.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,894,367.15 : 106,931,330.45 = 66,861,963.66 : x
  2. Step 2: Convert to fraction form
    77,894,367.15/106,931,330.45 = 66,861,963.66/x
  3. Step 3: Cross multiply
    77,894,367.15x = 106,931,330.45 × 66,861,963.66
  4. Step 4: Simplify right side
    77,894,367.15x = 7,149,638,730,329,041
  5. Step 5: Solve for x
    x = 7,149,638,730,329,041/77,894,367.15
  6. Step 6: Final answer
    x = 91,786,338.24

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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.