Home / 78,761,508.76-118,141,312.81-20,464,028.26

Finding the Fourth Proportional to 78,761,508.76, 118,141,312.81 and 20,464,028.26

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Solution

The fourth proportional to 78,761,508.76, 118,141,312.81 and 20,464,028.26 is: 30,695,795.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,761,508.76 : 118,141,312.81 = 20,464,028.26 : x
  2. Step 2: Convert to fraction form
    78,761,508.76/118,141,312.81 = 20,464,028.26/x
  3. Step 3: Cross multiply
    78,761,508.76x = 118,141,312.81 × 20,464,028.26
  4. Step 4: Simplify right side
    78,761,508.76x = 2,417,647,163,324,313.50
  5. Step 5: Solve for x
    x = 2,417,647,163,324,313.50/78,761,508.76
  6. Step 6: Final answer
    x = 30,695,795.46

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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.