Home / 78,328.62-117,510.21-25,735.86

Finding the Fourth Proportional to 78,328.62, 117,510.21 and 25,735.86

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Solution

The fourth proportional to 78,328.62, 117,510.21 and 25,735.86 is: 38,609.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,328.62 : 117,510.21 = 25,735.86 : x
  2. Step 2: Convert to fraction form
    78,328.62/117,510.21 = 25,735.86/x
  3. Step 3: Cross multiply
    78,328.62x = 117,510.21 × 25,735.86
  4. Step 4: Simplify right side
    78,328.62x = 3,024,226,313.13
  5. Step 5: Solve for x
    x = 3,024,226,313.13/78,328.62
  6. Step 6: Final answer
    x = 38,609.47

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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.