Finding the Fourth Proportional to 71,115,251.20, 106,677,542.40 and 19,998,937.60
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Solution
The fourth proportional to 71,115,251.20, 106,677,542.40 and 19,998,937.60 is: 29,999,718.45
Step by Step Solution
- Step 1: Write the proportion equation
71,115,251.20 : 106,677,542.40 = 19,998,937.60 : x - Step 2: Convert to fraction form
71,115,251.20/106,677,542.40 = 19,998,937.60/x - Step 3: Cross multiply
71,115,251.20x = 106,677,542.40 × 19,998,937.60 - Step 4: Simplify right side
71,115,251.20x = 2,133,437,513,778,954.50 - Step 5: Solve for x
x = 2,133,437,513,778,954.50/71,115,251.20 - Step 6: Final answer
x = 29,999,718.45
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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.