Finding the Fourth Proportional to 81,242,943.69, 121,860,123.55 and 26,648,337.81
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Solution
The fourth proportional to 81,242,943.69, 121,860,123.55 and 26,648,337.81 is: 39,971,098.91
Step by Step Solution
- Step 1: Write the proportion equation
81,242,943.69 : 121,860,123.55 = 26,648,337.81 : x - Step 2: Convert to fraction form
81,242,943.69/121,860,123.55 = 26,648,337.81/x - Step 3: Cross multiply
81,242,943.69x = 121,860,123.55 × 26,648,337.81 - Step 4: Simplify right side
81,242,943.69x = 3,247,369,737,928,736 - Step 5: Solve for x
x = 3,247,369,737,928,736/81,242,943.69 - Step 6: Final answer
x = 39,971,098.91
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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.