Home / 78,682.74-118,126.98-46,720.14

Finding the Fourth Proportional to 78,682.74, 118,126.98 and 46,720.14

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Solution

The fourth proportional to 78,682.74, 118,126.98 and 46,720.14 is: 70,141.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,682.74 : 118,126.98 = 46,720.14 : x
  2. Step 2: Convert to fraction form
    78,682.74/118,126.98 = 46,720.14/x
  3. Step 3: Cross multiply
    78,682.74x = 118,126.98 × 46,720.14
  4. Step 4: Simplify right side
    78,682.74x = 5,518,909,043.38
  5. Step 5: Solve for x
    x = 5,518,909,043.38/78,682.74
  6. Step 6: Final answer
    x = 70,141.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.