Finding the Fourth Proportional to 73,986,646.60, 110,979,969.90 and 70,963,337.80
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Solution
The fourth proportional to 73,986,646.60, 110,979,969.90 and 70,963,337.80 is: 106,445,006.70
Step by Step Solution
- Step 1: Write the proportion equation
73,986,646.60 : 110,979,969.90 = 70,963,337.80 : x - Step 2: Convert to fraction form
73,986,646.60/110,979,969.90 = 70,963,337.80/x - Step 3: Cross multiply
73,986,646.60x = 110,979,969.90 × 70,963,337.80 - Step 4: Simplify right side
73,986,646.60x = 7,875,509,093,047,532 - Step 5: Solve for x
x = 7,875,509,093,047,532/73,986,646.60 - Step 6: Final answer
x = 106,445,006.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.