Home / 78,464.05-117,695.01-19,300.23

Finding the Fourth Proportional to 78,464.05, 117,695.01 and 19,300.23

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Solution

The fourth proportional to 78,464.05, 117,695.01 and 19,300.23 is: 28,950.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,464.05 : 117,695.01 = 19,300.23 : x
  2. Step 2: Convert to fraction form
    78,464.05/117,695.01 = 19,300.23/x
  3. Step 3: Cross multiply
    78,464.05x = 117,695.01 × 19,300.23
  4. Step 4: Simplify right side
    78,464.05x = 2,271,540,762.85
  5. Step 5: Solve for x
    x = 2,271,540,762.85/78,464.05
  6. Step 6: Final answer
    x = 28,950.08

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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.