Finding the Fourth Proportional to 85,769,420.08, 128,548,727.64 and 39,648,903.40
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Solution
The fourth proportional to 85,769,420.08, 128,548,727.64 and 39,648,903.40 is: 59,424,630.36
Step by Step Solution
- Step 1: Write the proportion equation
85,769,420.08 : 128,548,727.64 = 39,648,903.40 : x - Step 2: Convert to fraction form
85,769,420.08/128,548,727.64 = 39,648,903.40/x - Step 3: Cross multiply
85,769,420.08x = 128,548,727.64 × 39,648,903.40 - Step 4: Simplify right side
85,769,420.08x = 5,096,816,084,391,270 - Step 5: Solve for x
x = 5,096,816,084,391,270/85,769,420.08 - Step 6: Final answer
x = 59,424,630.36
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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.