Home / 77,259.48-115,880.10-20,339.16

Finding the Fourth Proportional to 77,259.48, 115,880.10 and 20,339.16

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Solution

The fourth proportional to 77,259.48, 115,880.10 and 20,339.16 is: 30,506.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,259.48 : 115,880.10 = 20,339.16 : x
  2. Step 2: Convert to fraction form
    77,259.48/115,880.10 = 20,339.16/x
  3. Step 3: Cross multiply
    77,259.48x = 115,880.10 × 20,339.16
  4. Step 4: Simplify right side
    77,259.48x = 2,356,903,894.72
  5. Step 5: Solve for x
    x = 2,356,903,894.72/77,259.48
  6. Step 6: Final answer
    x = 30,506.34

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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.