Home / 77,913.16-107,520.20-42,103.18

Finding the Fourth Proportional to 77,913.16, 107,520.20 and 42,103.18

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Solution

The fourth proportional to 77,913.16, 107,520.20 and 42,103.18 is: 58,102.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,913.16 : 107,520.20 = 42,103.18 : x
  2. Step 2: Convert to fraction form
    77,913.16/107,520.20 = 42,103.18/x
  3. Step 3: Cross multiply
    77,913.16x = 107,520.20 × 42,103.18
  4. Step 4: Simplify right side
    77,913.16x = 4,526,942,334.24
  5. Step 5: Solve for x
    x = 4,526,942,334.24/77,913.16
  6. Step 6: Final answer
    x = 58,102.41

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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.