Finding the Fourth Proportional to 70,808.84, 97,718.99 and 38,980.70
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Solution
The fourth proportional to 70,808.84, 97,718.99 and 38,980.70 is: 53,794.90
Step by Step Solution
- Step 1: Write the proportion equation
70,808.84 : 97,718.99 = 38,980.70 : x - Step 2: Convert to fraction form
70,808.84/97,718.99 = 38,980.70/x - Step 3: Cross multiply
70,808.84x = 97,718.99 × 38,980.70 - Step 4: Simplify right side
70,808.84x = 3,809,153,949.99 - Step 5: Solve for x
x = 3,809,153,949.99/70,808.84 - Step 6: Final answer
x = 53,794.90
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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.