Finding the Fourth Proportional to 65,712,921.20, 98,569,381.80 and 48,706,809.20
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Solution
The fourth proportional to 65,712,921.20, 98,569,381.80 and 48,706,809.20 is: 73,060,213.80
Step by Step Solution
- Step 1: Write the proportion equation
65,712,921.20 : 98,569,381.80 = 48,706,809.20 : x - Step 2: Convert to fraction form
65,712,921.20/98,569,381.80 = 48,706,809.20/x - Step 3: Cross multiply
65,712,921.20x = 98,569,381.80 × 48,706,809.20 - Step 4: Simplify right side
65,712,921.20x = 4,801,000,072,294,553 - Step 5: Solve for x
x = 4,801,000,072,294,553/65,712,921.20 - Step 6: Final answer
x = 73,060,213.80
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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.