Finding the Fourth Proportional to 40,724,838.18, 56,198,840.85 and 22,389,982.74
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Solution
The fourth proportional to 40,724,838.18, 56,198,840.85 and 22,389,982.74 is: 30,897,386.78
Step by Step Solution
- Step 1: Write the proportion equation
40,724,838.18 : 56,198,840.85 = 22,389,982.74 : x - Step 2: Convert to fraction form
40,724,838.18/56,198,840.85 = 22,389,982.74/x - Step 3: Cross multiply
40,724,838.18x = 56,198,840.85 × 22,389,982.74 - Step 4: Simplify right side
40,724,838.18x = 1,258,291,076,639,506.75 - Step 5: Solve for x
x = 1,258,291,076,639,506.75/40,724,838.18 - Step 6: Final answer
x = 30,897,386.78
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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.