Finding the Fourth Proportional to 87,781,748.36, 121,138,823.25 and 48,626,061.21
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Solution
The fourth proportional to 87,781,748.36, 121,138,823.25 and 48,626,061.21 is: 67,103,970.30
Step by Step Solution
- Step 1: Write the proportion equation
87,781,748.36 : 121,138,823.25 = 48,626,061.21 : x - Step 2: Convert to fraction form
87,781,748.36/121,138,823.25 = 48,626,061.21/x - Step 3: Cross multiply
87,781,748.36x = 121,138,823.25 × 48,626,061.21 - Step 4: Simplify right side
87,781,748.36x = 5,890,503,834,261,871 - Step 5: Solve for x
x = 5,890,503,834,261,871/87,781,748.36 - Step 6: Final answer
x = 67,103,970.30
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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.