Finding the Fourth Proportional to 77,485,926.03, 106,938,136.07 and 57,872,778.81
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Solution
The fourth proportional to 77,485,926.03, 106,938,136.07 and 57,872,778.81 is: 79,870,079.80
Step by Step Solution
- Step 1: Write the proportion equation
77,485,926.03 : 106,938,136.07 = 57,872,778.81 : x - Step 2: Convert to fraction form
77,485,926.03/106,938,136.07 = 57,872,778.81/x - Step 3: Cross multiply
77,485,926.03x = 106,938,136.07 × 57,872,778.81 - Step 4: Simplify right side
77,485,926.03x = 6,188,807,095,132,793 - Step 5: Solve for x
x = 6,188,807,095,132,793/77,485,926.03 - Step 6: Final answer
x = 79,870,079.80
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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.