Home / 78,428,506.52-108,223,756.80-45,382,163.78

Finding the Fourth Proportional to 78,428,506.52, 108,223,756.80 and 45,382,163.78

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Solution

The fourth proportional to 78,428,506.52, 108,223,756.80 and 45,382,163.78 is: 62,622,998.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,428,506.52 : 108,223,756.80 = 45,382,163.78 : x
  2. Step 2: Convert to fraction form
    78,428,506.52/108,223,756.80 = 45,382,163.78/x
  3. Step 3: Cross multiply
    78,428,506.52x = 108,223,756.80 × 45,382,163.78
  4. Step 4: Simplify right side
    78,428,506.52x = 4,911,428,255,443,370
  5. Step 5: Solve for x
    x = 4,911,428,255,443,370/78,428,506.52
  6. Step 6: Final answer
    x = 62,622,998.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.