Home / 78,579,491.22-117,868,407.39-30,710,020.50

Finding the Fourth Proportional to 78,579,491.22, 117,868,407.39 and 30,710,020.50

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Solution

The fourth proportional to 78,579,491.22, 117,868,407.39 and 30,710,020.50 is: 46,064,706.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,579,491.22 : 117,868,407.39 = 30,710,020.50 : x
  2. Step 2: Convert to fraction form
    78,579,491.22/117,868,407.39 = 30,710,020.50/x
  3. Step 3: Cross multiply
    78,579,491.22x = 117,868,407.39 × 30,710,020.50
  4. Step 4: Simplify right side
    78,579,491.22x = 3,619,741,207,249,251.50
  5. Step 5: Solve for x
    x = 3,619,741,207,249,251.50/78,579,491.22
  6. Step 6: Final answer
    x = 46,064,706.59

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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.