Finding the Fourth Proportional to 56,867,829.36, 78,395,981.40 and 40,541,961.84
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Solution
The fourth proportional to 56,867,829.36, 78,395,981.40 and 40,541,961.84 is: 55,889,716.95
Step by Step Solution
- Step 1: Write the proportion equation
56,867,829.36 : 78,395,981.40 = 40,541,961.84 : x - Step 2: Convert to fraction form
56,867,829.36/78,395,981.40 = 40,541,961.84/x - Step 3: Cross multiply
56,867,829.36x = 78,395,981.40 × 40,541,961.84 - Step 4: Simplify right side
56,867,829.36x = 3,178,326,886,328,150.50 - Step 5: Solve for x
x = 3,178,326,886,328,150.50/56,867,829.36 - Step 6: Final answer
x = 55,889,716.95
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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.