Home / 78,495.74-108,324.63-42,686.14

Finding the Fourth Proportional to 78,495.74, 108,324.63 and 42,686.14

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Solution

The fourth proportional to 78,495.74, 108,324.63 and 42,686.14 is: 58,907.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,495.74 : 108,324.63 = 42,686.14 : x
  2. Step 2: Convert to fraction form
    78,495.74/108,324.63 = 42,686.14/x
  3. Step 3: Cross multiply
    78,495.74x = 108,324.63 × 42,686.14
  4. Step 4: Simplify right side
    78,495.74x = 4,623,960,321.63
  5. Step 5: Solve for x
    x = 4,623,960,321.63/78,495.74
  6. Step 6: Final answer
    x = 58,907.15

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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.