Home / 78,351.93-108,122.58-42,541.02

Finding the Fourth Proportional to 78,351.93, 108,122.58 and 42,541.02

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Solution

The fourth proportional to 78,351.93, 108,122.58 and 42,541.02 is: 58,704.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,351.93 : 108,122.58 = 42,541.02 : x
  2. Step 2: Convert to fraction form
    78,351.93/108,122.58 = 42,541.02/x
  3. Step 3: Cross multiply
    78,351.93x = 108,122.58 × 42,541.02
  4. Step 4: Simplify right side
    78,351.93x = 4,599,644,838.23
  5. Step 5: Solve for x
    x = 4,599,644,838.23/78,351.93
  6. Step 6: Final answer
    x = 58,704.93

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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.