Finding the Fourth Proportional to 38,920,938.14, 53,708,590.74 and 21,516,245.36
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Solution
The fourth proportional to 38,920,938.14, 53,708,590.74 and 21,516,245.36 is: 29,691,144.96
Step by Step Solution
- Step 1: Write the proportion equation
38,920,938.14 : 53,708,590.74 = 21,516,245.36 : x - Step 2: Convert to fraction form
38,920,938.14/53,708,590.74 = 21,516,245.36/x - Step 3: Cross multiply
38,920,938.14x = 53,708,590.74 × 21,516,245.36 - Step 4: Simplify right side
38,920,938.14x = 1,155,607,216,301,664 - Step 5: Solve for x
x = 1,155,607,216,301,664/38,920,938.14 - Step 6: Final answer
x = 29,691,144.96
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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.