Finding the Fourth Proportional to 77,031,626.78, 106,241,660.68 and 67,719,285.80
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Solution
The fourth proportional to 77,031,626.78, 106,241,660.68 and 67,719,285.80 is: 93,398,123.40
Step by Step Solution
- Step 1: Write the proportion equation
77,031,626.78 : 106,241,660.68 = 67,719,285.80 : x - Step 2: Convert to fraction form
77,031,626.78/106,241,660.68 = 67,719,285.80/x - Step 3: Cross multiply
77,031,626.78x = 106,241,660.68 × 67,719,285.80 - Step 4: Simplify right side
77,031,626.78x = 7,194,609,383,455,543 - Step 5: Solve for x
x = 7,194,609,383,455,543/77,031,626.78 - Step 6: Final answer
x = 93,398,123.40
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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.