Home / 78,465.24-108,330.48-53,977.86

Finding the Fourth Proportional to 78,465.24, 108,330.48 and 53,977.86

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Solution

The fourth proportional to 78,465.24, 108,330.48 and 53,977.86 is: 74,522.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,465.24 : 108,330.48 = 53,977.86 : x
  2. Step 2: Convert to fraction form
    78,465.24/108,330.48 = 53,977.86/x
  3. Step 3: Cross multiply
    78,465.24x = 108,330.48 × 53,977.86
  4. Step 4: Simplify right side
    78,465.24x = 5,847,447,483.17
  5. Step 5: Solve for x
    x = 5,847,447,483.17/78,465.24
  6. Step 6: Final answer
    x = 74,522.78

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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.