Home / 78,494.07-117,740.08-19,330.26

Finding the Fourth Proportional to 78,494.07, 117,740.08 and 19,330.26

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Solution

The fourth proportional to 78,494.07, 117,740.08 and 19,330.26 is: 28,995.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,494.07 : 117,740.08 = 19,330.26 : x
  2. Step 2: Convert to fraction form
    78,494.07/117,740.08 = 19,330.26/x
  3. Step 3: Cross multiply
    78,494.07x = 117,740.08 × 19,330.26
  4. Step 4: Simplify right side
    78,494.07x = 2,275,946,358.82
  5. Step 5: Solve for x
    x = 2,275,946,358.82/78,494.07
  6. Step 6: Final answer
    x = 28,995.14

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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.