Home / 78,130,856.78-117,196,223.59-23,543,442.94

Finding the Fourth Proportional to 78,130,856.78, 117,196,223.59 and 23,543,442.94

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Solution

The fourth proportional to 78,130,856.78, 117,196,223.59 and 23,543,442.94 is: 35,315,145.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,130,856.78 : 117,196,223.59 = 23,543,442.94 : x
  2. Step 2: Convert to fraction form
    78,130,856.78/117,196,223.59 = 23,543,442.94/x
  3. Step 3: Cross multiply
    78,130,856.78x = 117,196,223.59 × 23,543,442.94
  4. Step 4: Simplify right side
    78,130,856.78x = 2,759,202,602,484,858.50
  5. Step 5: Solve for x
    x = 2,759,202,602,484,858.50/78,130,856.78
  6. Step 6: Final answer
    x = 35,315,145.85

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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.