Finding the Fourth Proportional to 78,889,412.18, 118,334,116.44 and 21,381,682.20
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Solution
The fourth proportional to 78,889,412.18, 118,334,116.44 and 21,381,682.20 is: 32,072,522.81
Step by Step Solution
- Step 1: Write the proportion equation
78,889,412.18 : 118,334,116.44 = 21,381,682.20 : x - Step 2: Convert to fraction form
78,889,412.18/118,334,116.44 = 21,381,682.20/x - Step 3: Cross multiply
78,889,412.18x = 118,334,116.44 × 21,381,682.20 - Step 4: Simplify right side
78,889,412.18x = 2,530,182,471,137,875 - Step 5: Solve for x
x = 2,530,182,471,137,875/78,889,412.18 - Step 6: Final answer
x = 32,072,522.81
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1.5x scale
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.