Finding the Fourth Proportional to 77,136,794.06, 106,451,844.90 and 42,330,730.10
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Solution
The fourth proportional to 77,136,794.06, 106,451,844.90 and 42,330,730.10 is: 58,418,091.78
Step by Step Solution
- Step 1: Write the proportion equation
77,136,794.06 : 106,451,844.90 = 42,330,730.10 : x - Step 2: Convert to fraction form
77,136,794.06/106,451,844.90 = 42,330,730.10/x - Step 3: Cross multiply
77,136,794.06x = 106,451,844.90 × 42,330,730.10 - Step 4: Simplify right side
77,136,794.06x = 4,506,184,315,108,962 - Step 5: Solve for x
x = 4,506,184,315,108,962/77,136,794.06 - Step 6: Final answer
x = 58,418,091.78
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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.