Finding the Fourth Proportional to 80,692,405.36, 121,038,191.84 and 31,513,248.88
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Solution
The fourth proportional to 80,692,405.36, 121,038,191.84 and 31,513,248.88 is: 47,269,710.78
Step by Step Solution
- Step 1: Write the proportion equation
80,692,405.36 : 121,038,191.84 = 31,513,248.88 : x - Step 2: Convert to fraction form
80,692,405.36/121,038,191.84 = 31,513,248.88/x - Step 3: Cross multiply
80,692,405.36x = 121,038,191.84 × 31,513,248.88 - Step 4: Simplify right side
80,692,405.36x = 3,814,306,663,439,105 - Step 5: Solve for x
x = 3,814,306,663,439,105/80,692,405.36 - Step 6: Final answer
x = 47,269,710.78
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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.