Finding the Fourth Proportional to 90,127,975.40, 124,376,638.98 and 48,874,856.68
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Solution
The fourth proportional to 90,127,975.40, 124,376,638.98 and 48,874,856.68 is: 67,447,320.07
Step by Step Solution
- Step 1: Write the proportion equation
90,127,975.40 : 124,376,638.98 = 48,874,856.68 : x - Step 2: Convert to fraction form
90,127,975.40/124,376,638.98 = 48,874,856.68/x - Step 3: Cross multiply
90,127,975.40x = 124,376,638.98 × 48,874,856.68 - Step 4: Simplify right side
90,127,975.40x = 6,078,890,404,487,602 - Step 5: Solve for x
x = 6,078,890,404,487,602/90,127,975.40 - Step 6: Final answer
x = 67,447,320.07
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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.