Finding the Fourth Proportional to 85,431,246.24, 117,862,579.80 and 63,157,715.04
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Solution
The fourth proportional to 85,431,246.24, 117,862,579.80 and 63,157,715.04 is: 87,133,590.54
Step by Step Solution
- Step 1: Write the proportion equation
85,431,246.24 : 117,862,579.80 = 63,157,715.04 : x - Step 2: Convert to fraction form
85,431,246.24/117,862,579.80 = 63,157,715.04/x - Step 3: Cross multiply
85,431,246.24x = 117,862,579.80 × 63,157,715.04 - Step 4: Simplify right side
85,431,246.24x = 7,443,931,228,887,660 - Step 5: Solve for x
x = 7,443,931,228,887,660/85,431,246.24 - Step 6: Final answer
x = 87,133,590.54
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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.