Home / 80,477,380.80-120,716,071.20-64,038,139.20

Finding the Fourth Proportional to 80,477,380.80, 120,716,071.20 and 64,038,139.20

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Solution

The fourth proportional to 80,477,380.80, 120,716,071.20 and 64,038,139.20 is: 96,057,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,477,380.80 : 120,716,071.20 = 64,038,139.20 : x
  2. Step 2: Convert to fraction form
    80,477,380.80/120,716,071.20 = 64,038,139.20/x
  3. Step 3: Cross multiply
    80,477,380.80x = 120,716,071.20 × 64,038,139.20
  4. Step 4: Simplify right side
    80,477,380.80x = 7,730,432,571,182,712
  5. Step 5: Solve for x
    x = 7,730,432,571,182,712/80,477,380.80
  6. Step 6: Final answer
    x = 96,057,208.80

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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.