Home / 77,820.95-116,777.84-40,380.72

Finding the Fourth Proportional to 77,820.95, 116,777.84 and 40,380.72

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Solution

The fourth proportional to 77,820.95, 116,777.84 and 40,380.72 is: 60,595.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,820.95 : 116,777.84 = 40,380.72 : x
  2. Step 2: Convert to fraction form
    77,820.95/116,777.84 = 40,380.72/x
  3. Step 3: Cross multiply
    77,820.95x = 116,777.84 × 40,380.72
  4. Step 4: Simplify right side
    77,820.95x = 4,715,573,057.34
  5. Step 5: Solve for x
    x = 4,715,573,057.34/77,820.95
  6. Step 6: Final answer
    x = 60,595.17

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1.5x scale

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.