Home / 78,629.14-108,510.18-42,821.14

Finding the Fourth Proportional to 78,629.14, 108,510.18 and 42,821.14

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Solution

The fourth proportional to 78,629.14, 108,510.18 and 42,821.14 is: 59,094.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,629.14 : 108,510.18 = 42,821.14 : x
  2. Step 2: Convert to fraction form
    78,629.14/108,510.18 = 42,821.14/x
  3. Step 3: Cross multiply
    78,629.14x = 108,510.18 × 42,821.14
  4. Step 4: Simplify right side
    78,629.14x = 4,646,529,609.21
  5. Step 5: Solve for x
    x = 4,646,529,609.21/78,629.14
  6. Step 6: Final answer
    x = 59,094.24

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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.