Finding the Fourth Proportional to 85,536,562.90, 128,304,844.35 and 84,780,735.70
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Solution
The fourth proportional to 85,536,562.90, 128,304,844.35 and 84,780,735.70 is: 127,171,103.55
Step by Step Solution
- Step 1: Write the proportion equation
85,536,562.90 : 128,304,844.35 = 84,780,735.70 : x - Step 2: Convert to fraction form
85,536,562.90/128,304,844.35 = 84,780,735.70/x - Step 3: Cross multiply
85,536,562.90x = 128,304,844.35 × 84,780,735.70 - Step 4: Simplify right side
85,536,562.90x = 10,877,779,097,866,988 - Step 5: Solve for x
x = 10,877,779,097,866,988/85,536,562.90 - Step 6: Final answer
x = 127,171,103.55
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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.