Finding the Fourth Proportional to 83,355.12, 115,030.26 and 45,631.80
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Solution
The fourth proportional to 83,355.12, 115,030.26 and 45,631.80 is: 62,971.99
Step by Step Solution
- Step 1: Write the proportion equation
83,355.12 : 115,030.26 = 45,631.80 : x - Step 2: Convert to fraction form
83,355.12/115,030.26 = 45,631.80/x - Step 3: Cross multiply
83,355.12x = 115,030.26 × 45,631.80 - Step 4: Simplify right side
83,355.12x = 5,249,037,818.27 - Step 5: Solve for x
x = 5,249,037,818.27/83,355.12 - Step 6: Final answer
x = 62,971.99
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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.