Finding the Fourth Proportional to 71,342,390, 98,449,203.48 and 40,402,780.76
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Solution
The fourth proportional to 71,342,390, 98,449,203.48 and 40,402,780.76 is: 55,753,971.58
Step by Step Solution
- Step 1: Write the proportion equation
71,342,390 : 98,449,203.48 = 40,402,780.76 : x - Step 2: Convert to fraction form
71,342,390/98,449,203.48 = 40,402,780.76/x - Step 3: Cross multiply
71,342,390x = 98,449,203.48 × 40,402,780.76 - Step 4: Simplify right side
71,342,390x = 3,977,621,584,199,069 - Step 5: Solve for x
x = 3,977,621,584,199,069/71,342,390 - Step 6: Final answer
x = 55,753,971.58
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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.