Finding the Fourth Proportional to 80,877,422.40, 121,316,133.60 and 53,667,643.20
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Solution
The fourth proportional to 80,877,422.40, 121,316,133.60 and 53,667,643.20 is: 80,501,464.80
Step by Step Solution
- Step 1: Write the proportion equation
80,877,422.40 : 121,316,133.60 = 53,667,643.20 : x - Step 2: Convert to fraction form
80,877,422.40/121,316,133.60 = 53,667,643.20/x - Step 3: Cross multiply
80,877,422.40x = 121,316,133.60 × 53,667,643.20 - Step 4: Simplify right side
80,877,422.40x = 6,510,750,972,448,332 - Step 5: Solve for x
x = 6,510,750,972,448,332/80,877,422.40 - Step 6: Final answer
x = 80,501,464.80
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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.