Finding the Fourth Proportional to 80,986,440.30, 121,479,660.45 and 74,750,865.90
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Solution
The fourth proportional to 80,986,440.30, 121,479,660.45 and 74,750,865.90 is: 112,126,298.85
Step by Step Solution
- Step 1: Write the proportion equation
80,986,440.30 : 121,479,660.45 = 74,750,865.90 : x - Step 2: Convert to fraction form
80,986,440.30/121,479,660.45 = 74,750,865.90/x - Step 3: Cross multiply
80,986,440.30x = 121,479,660.45 × 74,750,865.90 - Step 4: Simplify right side
80,986,440.30x = 9,080,709,807,875,484 - Step 5: Solve for x
x = 9,080,709,807,875,484/80,986,440.30 - Step 6: Final answer
x = 112,126,298.85
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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.