Finding the Fourth Proportional to 55,774,531.06, 76,887,731.90 and 38,977,120.70
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Solution
The fourth proportional to 55,774,531.06, 76,887,731.90 and 38,977,120.70 is: 53,731,736.51
Step by Step Solution
- Step 1: Write the proportion equation
55,774,531.06 : 76,887,731.90 = 38,977,120.70 : x - Step 2: Convert to fraction form
55,774,531.06/76,887,731.90 = 38,977,120.70/x - Step 3: Cross multiply
55,774,531.06x = 76,887,731.90 × 38,977,120.70 - Step 4: Simplify right side
55,774,531.06x = 2,996,862,406,615,541 - Step 5: Solve for x
x = 2,996,862,406,615,541/55,774,531.06 - Step 6: Final answer
x = 53,731,736.51
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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.