Finding the Fourth Proportional to 80,224,646.64, 110,813,862.54 and 66,342,077.28
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Solution
The fourth proportional to 80,224,646.64, 110,813,862.54 and 66,342,077.28 is: 91,637,945.95
Step by Step Solution
- Step 1: Write the proportion equation
80,224,646.64 : 110,813,862.54 = 66,342,077.28 : x - Step 2: Convert to fraction form
80,224,646.64/110,813,862.54 = 66,342,077.28/x - Step 3: Cross multiply
80,224,646.64x = 110,813,862.54 × 66,342,077.28 - Step 4: Simplify right side
80,224,646.64x = 7,351,621,832,323,978 - Step 5: Solve for x
x = 7,351,621,832,323,978/80,224,646.64 - Step 6: Final answer
x = 91,637,945.95
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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.