Finding the Fourth Proportional to 77,979,039.41, 107,610,679.68 and 42,696,203.46
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Solution
The fourth proportional to 77,979,039.41, 107,610,679.68 and 42,696,203.46 is: 58,920,544.65
Step by Step Solution
- Step 1: Write the proportion equation
77,979,039.41 : 107,610,679.68 = 42,696,203.46 : x - Step 2: Convert to fraction form
77,979,039.41/107,610,679.68 = 42,696,203.46/x - Step 3: Cross multiply
77,979,039.41x = 107,610,679.68 × 42,696,203.46 - Step 4: Simplify right side
77,979,039.41x = 4,594,567,473,522,516 - Step 5: Solve for x
x = 4,594,567,473,522,516/77,979,039.41 - Step 6: Final answer
x = 58,920,544.65
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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.