Home / 78,002.55-117,004.02-25,416.13

Finding the Fourth Proportional to 78,002.55, 117,004.02 and 25,416.13

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Solution

The fourth proportional to 78,002.55, 117,004.02 and 25,416.13 is: 38,124.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,002.55 : 117,004.02 = 25,416.13 : x
  2. Step 2: Convert to fraction form
    78,002.55/117,004.02 = 25,416.13/x
  3. Step 3: Cross multiply
    78,002.55x = 117,004.02 × 25,416.13
  4. Step 4: Simplify right side
    78,002.55x = 2,973,789,382.84
  5. Step 5: Solve for x
    x = 2,973,789,382.84/78,002.55
  6. Step 6: Final answer
    x = 38,124.26

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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.