Home / 78,941.58-108,938.10-43,130.82

Finding the Fourth Proportional to 78,941.58, 108,938.10 and 43,130.82

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Solution

The fourth proportional to 78,941.58, 108,938.10 and 43,130.82 is: 59,519.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,941.58 : 108,938.10 = 43,130.82 : x
  2. Step 2: Convert to fraction form
    78,941.58/108,938.10 = 43,130.82/x
  3. Step 3: Cross multiply
    78,941.58x = 108,938.10 × 43,130.82
  4. Step 4: Simplify right side
    78,941.58x = 4,698,589,582.24
  5. Step 5: Solve for x
    x = 4,698,589,582.24/78,941.58
  6. Step 6: Final answer
    x = 59,519.83

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1.5x scale

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.