Home / 78,095,455.78-117,060,591.40-28,879,686.08

Finding the Fourth Proportional to 78,095,455.78, 117,060,591.40 and 28,879,686.08

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Solution

The fourth proportional to 78,095,455.78, 117,060,591.40 and 28,879,686.08 is: 43,288,986.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,095,455.78 : 117,060,591.40 = 28,879,686.08 : x
  2. Step 2: Convert to fraction form
    78,095,455.78/117,060,591.40 = 28,879,686.08/x
  3. Step 3: Cross multiply
    78,095,455.78x = 117,060,591.40 × 28,879,686.08
  4. Step 4: Simplify right side
    78,095,455.78x = 3,380,673,132,191,599.50
  5. Step 5: Solve for x
    x = 3,380,673,132,191,599.50/78,095,455.78
  6. Step 6: Final answer
    x = 43,288,986.52

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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.