Home / 80,919,378.80-121,379,068.20-71,566,017.20

Finding the Fourth Proportional to 80,919,378.80, 121,379,068.20 and 71,566,017.20

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Solution

The fourth proportional to 80,919,378.80, 121,379,068.20 and 71,566,017.20 is: 107,349,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919,378.80 : 121,379,068.20 = 71,566,017.20 : x
  2. Step 2: Convert to fraction form
    80,919,378.80/121,379,068.20 = 71,566,017.20/x
  3. Step 3: Cross multiply
    80,919,378.80x = 121,379,068.20 × 71,566,017.20
  4. Step 4: Simplify right side
    80,919,378.80x = 8,686,616,482,521,174
  5. Step 5: Solve for x
    x = 8,686,616,482,521,174/80,919,378.80
  6. Step 6: Final answer
    x = 107,349,025.80

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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.