Finding the Fourth Proportional to 72,248,974.68, 99,677,845.98 and 42,857,794.20
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Solution
The fourth proportional to 72,248,974.68, 99,677,845.98 and 42,857,794.20 is: 59,128,487.68
Step by Step Solution
- Step 1: Write the proportion equation
72,248,974.68 : 99,677,845.98 = 42,857,794.20 : x - Step 2: Convert to fraction form
72,248,974.68/99,677,845.98 = 42,857,794.20/x - Step 3: Cross multiply
72,248,974.68x = 99,677,845.98 × 42,857,794.20 - Step 4: Simplify right side
72,248,974.68x = 4,271,972,609,310,138 - Step 5: Solve for x
x = 4,271,972,609,310,138/72,248,974.68 - Step 6: Final answer
x = 59,128,487.68
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1.5x scale
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.