Finding the Fourth Proportional to 39,869,925.58, 55,020,495.69 and 21,535,211.08
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Solution
The fourth proportional to 39,869,925.58, 55,020,495.69 and 21,535,211.08 is: 29,718,590.42
Step by Step Solution
- Step 1: Write the proportion equation
39,869,925.58 : 55,020,495.69 = 21,535,211.08 : x - Step 2: Convert to fraction form
39,869,925.58/55,020,495.69 = 21,535,211.08/x - Step 3: Cross multiply
39,869,925.58x = 55,020,495.69 × 21,535,211.08 - Step 4: Simplify right side
39,869,925.58x = 1,184,877,988,410,380 - Step 5: Solve for x
x = 1,184,877,988,410,380/39,869,925.58 - Step 6: Final answer
x = 29,718,590.42
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.