Finding the Fourth Proportional to 79,841,153.80, 119,761,730.70 and 54,331,985.80
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Solution
The fourth proportional to 79,841,153.80, 119,761,730.70 and 54,331,985.80 is: 81,497,978.70
Step by Step Solution
- Step 1: Write the proportion equation
79,841,153.80 : 119,761,730.70 = 54,331,985.80 : x - Step 2: Convert to fraction form
79,841,153.80/119,761,730.70 = 54,331,985.80/x - Step 3: Cross multiply
79,841,153.80x = 119,761,730.70 × 54,331,985.80 - Step 4: Simplify right side
79,841,153.80x = 6,506,892,651,775,824 - Step 5: Solve for x
x = 6,506,892,651,775,824/79,841,153.80 - Step 6: Final answer
x = 81,497,978.70
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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.