Home / 78,181.10-117,428.74-46,652.76

Finding the Fourth Proportional to 78,181.10, 117,428.74 and 46,652.76

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Solution

The fourth proportional to 78,181.10, 117,428.74 and 46,652.76 is: 70,072.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,181.10 : 117,428.74 = 46,652.76 : x
  2. Step 2: Convert to fraction form
    78,181.10/117,428.74 = 46,652.76/x
  3. Step 3: Cross multiply
    78,181.10x = 117,428.74 × 46,652.76
  4. Step 4: Simplify right side
    78,181.10x = 5,478,374,707.69
  5. Step 5: Solve for x
    x = 5,478,374,707.69/78,181.10
  6. Step 6: Final answer
    x = 70,072.88

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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.