Finding the Fourth Proportional to 93,780.99, 129,419.37 and 57,970.08
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Solution
The fourth proportional to 93,780.99, 129,419.37 and 57,970.08 is: 79,999.70
Step by Step Solution
- Step 1: Write the proportion equation
93,780.99 : 129,419.37 = 57,970.08 : x - Step 2: Convert to fraction form
93,780.99/129,419.37 = 57,970.08/x - Step 3: Cross multiply
93,780.99x = 129,419.37 × 57,970.08 - Step 4: Simplify right side
93,780.99x = 7,502,451,232.45 - Step 5: Solve for x
x = 7,502,451,232.45/93,780.99 - Step 6: Final answer
x = 79,999.70
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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.