Home / 78,015.16-117,000.40-25,429.24

Finding the Fourth Proportional to 78,015.16, 117,000.40 and 25,429.24

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Solution

The fourth proportional to 78,015.16, 117,000.40 and 25,429.24 is: 38,136.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,015.16 : 117,000.40 = 25,429.24 : x
  2. Step 2: Convert to fraction form
    78,015.16/117,000.40 = 25,429.24/x
  3. Step 3: Cross multiply
    78,015.16x = 117,000.40 × 25,429.24
  4. Step 4: Simplify right side
    78,015.16x = 2,975,231,251.70
  5. Step 5: Solve for x
    x = 2,975,231,251.70/78,015.16
  6. Step 6: Final answer
    x = 38,136.58

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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.