Finding the Fourth Proportional to 70,123,454.40, 96,779,979.57 and 40,353,490.99
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Solution
The fourth proportional to 70,123,454.40, 96,779,979.57 and 40,353,490.99 is: 55,693,349.20
Step by Step Solution
- Step 1: Write the proportion equation
70,123,454.40 : 96,779,979.57 = 40,353,490.99 : x - Step 2: Convert to fraction form
70,123,454.40/96,779,979.57 = 40,353,490.99/x - Step 3: Cross multiply
70,123,454.40x = 96,779,979.57 × 40,353,490.99 - Step 4: Simplify right side
70,123,454.40x = 3,905,410,033,106,479 - Step 5: Solve for x
x = 3,905,410,033,106,479/70,123,454.40 - Step 6: Final answer
x = 55,693,349.20
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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.