Finding the Fourth Proportional to 85,385,261,884.69, 128,092,292,074.26 and 28,711,652,878.63
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Solution
The fourth proportional to 85,385,261,884.69, 128,092,292,074.26 and 28,711,652,878.63 is: 43,072,321,209.61
Step by Step Solution
- Step 1: Write the proportion equation
85,385,261,884.69 : 128,092,292,074.26 = 28,711,652,878.63 : x - Step 2: Convert to fraction form
85,385,261,884.69/128,092,292,074.26 = 28,711,652,878.63/x - Step 3: Cross multiply
85,385,261,884.69x = 128,092,292,074.26 × 28,711,652,878.63 - Step 4: Simplify right side
85,385,261,884.69x = 3,677,741,426,464,113,819,648 - Step 5: Solve for x
x = 3,677,741,426,464,113,819,648/85,385,261,884.69 - Step 6: Final answer
x = 43,072,321,209.61
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1.5x scale
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.