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Finding the Fourth Proportional to 78,804.74, 108,750.90 and 42,995.54

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Solution

The fourth proportional to 78,804.74, 108,750.90 and 42,995.54 is: 59,334.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,804.74 : 108,750.90 = 42,995.54 : x
  2. Step 2: Convert to fraction form
    78,804.74/108,750.90 = 42,995.54/x
  3. Step 3: Cross multiply
    78,804.74x = 108,750.90 × 42,995.54
  4. Step 4: Simplify right side
    78,804.74x = 4,675,803,127.23
  5. Step 5: Solve for x
    x = 4,675,803,127.23/78,804.74
  6. Step 6: Final answer
    x = 59,334.04

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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.