Home / 78,825.30-118,043.55-52,386.90

Finding the Fourth Proportional to 78,825.30, 118,043.55 and 52,386.90

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Solution

The fourth proportional to 78,825.30, 118,043.55 and 52,386.90 is: 78,451.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,825.30 : 118,043.55 = 52,386.90 : x
  2. Step 2: Convert to fraction form
    78,825.30/118,043.55 = 52,386.90/x
  3. Step 3: Cross multiply
    78,825.30x = 118,043.55 × 52,386.90
  4. Step 4: Simplify right side
    78,825.30x = 6,183,935,649.50
  5. Step 5: Solve for x
    x = 6,183,935,649.50/78,825.30
  6. Step 6: Final answer
    x = 78,451.15

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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.