Finding the Fourth Proportional to 70,763,434.62, 97,637,381.69 and 39,812,310.78
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Solution
The fourth proportional to 70,763,434.62, 97,637,381.69 and 39,812,310.78 is: 54,931,898.15
Step by Step Solution
- Step 1: Write the proportion equation
70,763,434.62 : 97,637,381.69 = 39,812,310.78 : x - Step 2: Convert to fraction form
70,763,434.62/97,637,381.69 = 39,812,310.78/x - Step 3: Cross multiply
70,763,434.62x = 97,637,381.69 × 39,812,310.78 - Step 4: Simplify right side
70,763,434.62x = 3,887,169,783,388,700.50 - Step 5: Solve for x
x = 3,887,169,783,388,700.50/70,763,434.62 - Step 6: Final answer
x = 54,931,898.15
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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.