Finding the Fourth Proportional to 73,779,137.20, 110,668,705.80 and 51,777,479.80
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Solution
The fourth proportional to 73,779,137.20, 110,668,705.80 and 51,777,479.80 is: 77,666,219.70
Step by Step Solution
- Step 1: Write the proportion equation
73,779,137.20 : 110,668,705.80 = 51,777,479.80 : x - Step 2: Convert to fraction form
73,779,137.20/110,668,705.80 = 51,777,479.80/x - Step 3: Cross multiply
73,779,137.20x = 110,668,705.80 × 51,777,479.80 - Step 4: Simplify right side
73,779,137.20x = 5,730,146,679,051,642 - Step 5: Solve for x
x = 5,730,146,679,051,642/73,779,137.20 - Step 6: Final answer
x = 77,666,219.70
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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.