Finding the Fourth Proportional to 77,132,442.88, 106,442,479.08 and 42,325,715.68
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Solution
The fourth proportional to 77,132,442.88, 106,442,479.08 and 42,325,715.68 is: 58,409,327.35
Step by Step Solution
- Step 1: Write the proportion equation
77,132,442.88 : 106,442,479.08 = 42,325,715.68 : x - Step 2: Convert to fraction form
77,132,442.88/106,442,479.08 = 42,325,715.68/x - Step 3: Cross multiply
77,132,442.88x = 106,442,479.08 × 42,325,715.68 - Step 4: Simplify right side
77,132,442.88x = 4,505,254,105,814,428 - Step 5: Solve for x
x = 4,505,254,105,814,428/77,132,442.88 - Step 6: Final answer
x = 58,409,327.35
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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.