Home / 80,569,074.80-120,889,329.96-42,221,471.60

Finding the Fourth Proportional to 80,569,074.80, 120,889,329.96 and 42,221,471.60

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Solution

The fourth proportional to 80,569,074.80, 120,889,329.96 and 42,221,471.60 is: 63,350,924.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,569,074.80 : 120,889,329.96 = 42,221,471.60 : x
  2. Step 2: Convert to fraction form
    80,569,074.80/120,889,329.96 = 42,221,471.60/x
  3. Step 3: Cross multiply
    80,569,074.80x = 120,889,329.96 × 42,221,471.60
  4. Step 4: Simplify right side
    80,569,074.80x = 5,104,125,411,649,169
  5. Step 5: Solve for x
    x = 5,104,125,411,649,169/80,569,074.80
  6. Step 6: Final answer
    x = 63,350,924.96

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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.