Finding the Fourth Proportional to 86,173,780.80, 129,260,671.20 and 40,824,148.80
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Solution
The fourth proportional to 86,173,780.80, 129,260,671.20 and 40,824,148.80 is: 61,236,223.20
Step by Step Solution
- Step 1: Write the proportion equation
86,173,780.80 : 129,260,671.20 = 40,824,148.80 : x - Step 2: Convert to fraction form
86,173,780.80/129,260,671.20 = 40,824,148.80/x - Step 3: Cross multiply
86,173,780.80x = 129,260,671.20 × 40,824,148.80 - Step 4: Simplify right side
86,173,780.80x = 5,276,956,875,056,674 - Step 5: Solve for x
x = 5,276,956,875,056,674/86,173,780.80 - Step 6: Final answer
x = 61,236,223.20
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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.