Finding the Fourth Proportional to 78,918,257.48, 117,545,215.33 and 75,377,366.58
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Solution
The fourth proportional to 78,918,257.48, 117,545,215.33 and 75,377,366.58 is: 112,271,216.68
Step by Step Solution
- Step 1: Write the proportion equation
78,918,257.48 : 117,545,215.33 = 75,377,366.58 : x - Step 2: Convert to fraction form
78,918,257.48/117,545,215.33 = 75,377,366.58/x - Step 3: Cross multiply
78,918,257.48x = 117,545,215.33 × 75,377,366.58 - Step 4: Simplify right side
78,918,257.48x = 8,860,248,785,277,559 - Step 5: Solve for x
x = 8,860,248,785,277,559/78,918,257.48 - Step 6: Final answer
x = 112,271,216.68
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.