Home / 78,582.36-108,440.34-42,772.44

Finding the Fourth Proportional to 78,582.36, 108,440.34 and 42,772.44

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Solution

The fourth proportional to 78,582.36, 108,440.34 and 42,772.44 is: 59,024.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,582.36 : 108,440.34 = 42,772.44 : x
  2. Step 2: Convert to fraction form
    78,582.36/108,440.34 = 42,772.44/x
  3. Step 3: Cross multiply
    78,582.36x = 108,440.34 × 42,772.44
  4. Step 4: Simplify right side
    78,582.36x = 4,638,257,936.23
  5. Step 5: Solve for x
    x = 4,638,257,936.23/78,582.36
  6. Step 6: Final answer
    x = 59,024.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.