Home / 78,401.16-117,621.54-34,017.12

Finding the Fourth Proportional to 78,401.16, 117,621.54 and 34,017.12

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Solution

The fourth proportional to 78,401.16, 117,621.54 and 34,017.12 is: 51,034.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,401.16 : 117,621.54 = 34,017.12 : x
  2. Step 2: Convert to fraction form
    78,401.16/117,621.54 = 34,017.12/x
  3. Step 3: Cross multiply
    78,401.16x = 117,621.54 × 34,017.12
  4. Step 4: Simplify right side
    78,401.16x = 4,001,146,040.76
  5. Step 5: Solve for x
    x = 4,001,146,040.76/78,401.16
  6. Step 6: Final answer
    x = 51,034.27

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1.5x scale

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.