Home / 80,132,509.56-120,208,392-28,306,470.72

Finding the Fourth Proportional to 80,132,509.56, 120,208,392 and 28,306,470.72

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Solution

The fourth proportional to 80,132,509.56, 120,208,392 and 28,306,470.72 is: 42,463,107.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,132,509.56 : 120,208,392 = 28,306,470.72 : x
  2. Step 2: Convert to fraction form
    80,132,509.56/120,208,392 = 28,306,470.72/x
  3. Step 3: Cross multiply
    80,132,509.56x = 120,208,392 × 28,306,470.72
  4. Step 4: Simplify right side
    80,132,509.56x = 3,402,675,328,446,282
  5. Step 5: Solve for x
    x = 3,402,675,328,446,282/80,132,509.56
  6. Step 6: Final answer
    x = 42,463,107.01

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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.