Finding the Fourth Proportional to 70,248.60, 105,329.70 and 28,135.08
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Solution
The fourth proportional to 70,248.60, 105,329.70 and 28,135.08 is: 42,185.32
Step by Step Solution
- Step 1: Write the proportion equation
70,248.60 : 105,329.70 = 28,135.08 : x - Step 2: Convert to fraction form
70,248.60/105,329.70 = 28,135.08/x - Step 3: Cross multiply
70,248.60x = 105,329.70 × 28,135.08 - Step 4: Simplify right side
70,248.60x = 2,963,459,535.88 - Step 5: Solve for x
x = 2,963,459,535.88/70,248.60 - Step 6: Final answer
x = 42,185.32
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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.