Home / 77,478.09-106,920.56-43,485.90

Finding the Fourth Proportional to 77,478.09, 106,920.56 and 43,485.90

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Solution

The fourth proportional to 77,478.09, 106,920.56 and 43,485.90 is: 60,010.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,478.09 : 106,920.56 = 43,485.90 : x
  2. Step 2: Convert to fraction form
    77,478.09/106,920.56 = 43,485.90/x
  3. Step 3: Cross multiply
    77,478.09x = 106,920.56 × 43,485.90
  4. Step 4: Simplify right side
    77,478.09x = 4,649,536,082.43
  5. Step 5: Solve for x
    x = 4,649,536,082.43/77,478.09
  6. Step 6: Final answer
    x = 60,010.98

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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.