Finding the Fourth Proportional to 78,683,549.30, 118,025,323.95 and 73,896,643.70
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Solution
The fourth proportional to 78,683,549.30, 118,025,323.95 and 73,896,643.70 is: 110,844,965.55
Step by Step Solution
- Step 1: Write the proportion equation
78,683,549.30 : 118,025,323.95 = 73,896,643.70 : x - Step 2: Convert to fraction form
78,683,549.30/118,025,323.95 = 73,896,643.70/x - Step 3: Cross multiply
78,683,549.30x = 118,025,323.95 × 73,896,643.70 - Step 4: Simplify right side
78,683,549.30x = 8,721,675,311,510,227 - Step 5: Solve for x
x = 8,721,675,311,510,227/78,683,549.30 - Step 6: Final answer
x = 110,844,965.55
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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.