Finding the Fourth Proportional to 86,249,529.40, 129,310,482.30 and 40,758,179.80
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Solution
The fourth proportional to 86,249,529.40, 129,310,482.30 and 40,758,179.80 is: 61,107,114.72
Step by Step Solution
- Step 1: Write the proportion equation
86,249,529.40 : 129,310,482.30 = 40,758,179.80 : x - Step 2: Convert to fraction form
86,249,529.40/129,310,482.30 = 40,758,179.80/x - Step 3: Cross multiply
86,249,529.40x = 129,310,482.30 × 40,758,179.80 - Step 4: Simplify right side
86,249,529.40x = 5,270,459,887,608,117 - Step 5: Solve for x
x = 5,270,459,887,608,117/86,249,529.40 - Step 6: Final answer
x = 61,107,114.72
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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.