Home / 78,421.79-117,566.56-34,015.10

Finding the Fourth Proportional to 78,421.79, 117,566.56 and 34,015.10

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Solution

The fourth proportional to 78,421.79, 117,566.56 and 34,015.10 is: 50,993.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,421.79 : 117,566.56 = 34,015.10 : x
  2. Step 2: Convert to fraction form
    78,421.79/117,566.56 = 34,015.10/x
  3. Step 3: Cross multiply
    78,421.79x = 117,566.56 × 34,015.10
  4. Step 4: Simplify right side
    78,421.79x = 3,999,038,295.06
  5. Step 5: Solve for x
    x = 3,999,038,295.06/78,421.79
  6. Step 6: Final answer
    x = 50,993.97

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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.