Finding the Fourth Proportional to 97,931,805.87, 135,145,887.65 and 53,877,859.66
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Solution
The fourth proportional to 97,931,805.87, 135,145,887.65 and 53,877,859.66 is: 74,351,443.88
Step by Step Solution
- Step 1: Write the proportion equation
97,931,805.87 : 135,145,887.65 = 53,877,859.66 : x - Step 2: Convert to fraction form
97,931,805.87/135,145,887.65 = 53,877,859.66/x - Step 3: Cross multiply
97,931,805.87x = 135,145,887.65 × 53,877,859.66 - Step 4: Simplify right side
97,931,805.87x = 7,281,371,168,534,413 - Step 5: Solve for x
x = 7,281,371,168,534,413/97,931,805.87 - Step 6: Final answer
x = 74,351,443.88
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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.