Home / 78,009,852.30-117,014,778.45-39,746,100.30

Finding the Fourth Proportional to 78,009,852.30, 117,014,778.45 and 39,746,100.30

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Solution

The fourth proportional to 78,009,852.30, 117,014,778.45 and 39,746,100.30 is: 59,619,150.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,009,852.30 : 117,014,778.45 = 39,746,100.30 : x
  2. Step 2: Convert to fraction form
    78,009,852.30/117,014,778.45 = 39,746,100.30/x
  3. Step 3: Cross multiply
    78,009,852.30x = 117,014,778.45 × 39,746,100.30
  4. Step 4: Simplify right side
    78,009,852.30x = 4,650,881,120,855,978
  5. Step 5: Solve for x
    x = 4,650,881,120,855,978/78,009,852.30
  6. Step 6: Final answer
    x = 59,619,150.45

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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.