Home / 78,330.58-117,513.63-25,740.52

Finding the Fourth Proportional to 78,330.58, 117,513.63 and 25,740.52

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Solution

The fourth proportional to 78,330.58, 117,513.63 and 25,740.52 is: 38,616.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,330.58 : 117,513.63 = 25,740.52 : x
  2. Step 2: Convert to fraction form
    78,330.58/117,513.63 = 25,740.52/x
  3. Step 3: Cross multiply
    78,330.58x = 117,513.63 × 25,740.52
  4. Step 4: Simplify right side
    78,330.58x = 3,024,861,649.50
  5. Step 5: Solve for x
    x = 3,024,861,649.50/78,330.58
  6. Step 6: Final answer
    x = 38,616.61

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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.