Finding the Fourth Proportional to 42,018,941.36, 57,986,139.12 and 22,703,357.36
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Solution
The fourth proportional to 42,018,941.36, 57,986,139.12 and 22,703,357.36 is: 31,330,633.18
Step by Step Solution
- Step 1: Write the proportion equation
42,018,941.36 : 57,986,139.12 = 22,703,357.36 : x - Step 2: Convert to fraction form
42,018,941.36/57,986,139.12 = 22,703,357.36/x - Step 3: Cross multiply
42,018,941.36x = 57,986,139.12 × 22,703,357.36 - Step 4: Simplify right side
42,018,941.36x = 1,316,480,038,368,035.75 - Step 5: Solve for x
x = 1,316,480,038,368,035.75/42,018,941.36 - Step 6: Final answer
x = 31,330,633.18
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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.