Finding the Fourth Proportional to 85,963,575.40, 128,945,363.10 and 76,557,725.80
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Solution
The fourth proportional to 85,963,575.40, 128,945,363.10 and 76,557,725.80 is: 114,836,588.70
Step by Step Solution
- Step 1: Write the proportion equation
85,963,575.40 : 128,945,363.10 = 76,557,725.80 : x - Step 2: Convert to fraction form
85,963,575.40/128,945,363.10 = 76,557,725.80/x - Step 3: Cross multiply
85,963,575.40x = 128,945,363.10 × 76,557,725.80 - Step 4: Simplify right side
85,963,575.40x = 9,871,763,751,391,238 - Step 5: Solve for x
x = 9,871,763,751,391,238/85,963,575.40 - Step 6: Final answer
x = 114,836,588.70
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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.