Finding the Fourth Proportional to 81,941,426.40, 122,912,139.60 and 56,113,393.80
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Solution
The fourth proportional to 81,941,426.40, 122,912,139.60 and 56,113,393.80 is: 84,170,090.70
Step by Step Solution
- Step 1: Write the proportion equation
81,941,426.40 : 122,912,139.60 = 56,113,393.80 : x - Step 2: Convert to fraction form
81,941,426.40/122,912,139.60 = 56,113,393.80/x - Step 3: Cross multiply
81,941,426.40x = 122,912,139.60 × 56,113,393.80 - Step 4: Simplify right side
81,941,426.40x = 6,897,017,292,175,374 - Step 5: Solve for x
x = 6,897,017,292,175,374/81,941,426.40 - Step 6: Final answer
x = 84,170,090.70
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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.