Finding the Fourth Proportional to 93,781.99, 129,420.75 and 57,971.08
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Solution
The fourth proportional to 93,781.99, 129,420.75 and 57,971.08 is: 80,001.08
Step by Step Solution
- Step 1: Write the proportion equation
93,781.99 : 129,420.75 = 57,971.08 : x - Step 2: Convert to fraction form
93,781.99/129,420.75 = 57,971.08/x - Step 3: Cross multiply
93,781.99x = 129,420.75 × 57,971.08 - Step 4: Simplify right side
93,781.99x = 7,502,660,651.91 - Step 5: Solve for x
x = 7,502,660,651.91/93,781.99 - Step 6: Final answer
x = 80,001.08
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1.5x scale
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.