Finding the Fourth Proportional to 39,963,643.08, 55,149,827.52 and 21,628,928.56
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Solution
The fourth proportional to 39,963,643.08, 55,149,827.52 and 21,628,928.56 is: 29,847,921.45
Step by Step Solution
- Step 1: Write the proportion equation
39,963,643.08 : 55,149,827.52 = 21,628,928.56 : x - Step 2: Convert to fraction form
39,963,643.08/55,149,827.52 = 21,628,928.56/x - Step 3: Cross multiply
39,963,643.08x = 55,149,827.52 × 21,628,928.56 - Step 4: Simplify right side
39,963,643.08x = 1,192,831,679,526,402 - Step 5: Solve for x
x = 1,192,831,679,526,402/39,963,643.08 - Step 6: Final answer
x = 29,847,921.45
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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.