Finding the Fourth Proportional to 93,378,739.68, 128,839,967.28 and 54,740,106.72
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Solution
The fourth proportional to 93,378,739.68, 128,839,967.28 and 54,740,106.72 is: 75,528,043.99
Step by Step Solution
- Step 1: Write the proportion equation
93,378,739.68 : 128,839,967.28 = 54,740,106.72 : x - Step 2: Convert to fraction form
93,378,739.68/128,839,967.28 = 54,740,106.72/x - Step 3: Cross multiply
93,378,739.68x = 128,839,967.28 × 54,740,106.72 - Step 4: Simplify right side
93,378,739.68x = 7,052,713,558,708,508 - Step 5: Solve for x
x = 7,052,713,558,708,508/93,378,739.68 - Step 6: Final answer
x = 75,528,043.99
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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.