Finding the Fourth Proportional to 81,657,103.55, 122,485,655.33 and 74,098,831.55
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Solution
The fourth proportional to 81,657,103.55, 122,485,655.33 and 74,098,831.55 is: 111,148,247.33
Step by Step Solution
- Step 1: Write the proportion equation
81,657,103.55 : 122,485,655.33 = 74,098,831.55 : x - Step 2: Convert to fraction form
81,657,103.55/122,485,655.33 = 74,098,831.55/x - Step 3: Cross multiply
81,657,103.55x = 122,485,655.33 × 74,098,831.55 - Step 4: Simplify right side
81,657,103.55x = 9,076,043,941,218,536 - Step 5: Solve for x
x = 9,076,043,941,218,536/81,657,103.55 - Step 6: Final answer
x = 111,148,247.33
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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.