Finding the Fourth Proportional to 77,478,934.99, 106,925,765.97 and 42,671,616.21
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Solution
The fourth proportional to 77,478,934.99, 106,925,765.97 and 42,671,616.21 is: 58,889,493.63
Step by Step Solution
- Step 1: Write the proportion equation
77,478,934.99 : 106,925,765.97 = 42,671,616.21 : x - Step 2: Convert to fraction form
77,478,934.99/106,925,765.97 = 42,671,616.21/x - Step 3: Cross multiply
77,478,934.99x = 106,925,765.97 × 42,671,616.21 - Step 4: Simplify right side
77,478,934.99x = 4,562,695,248,432,118 - Step 5: Solve for x
x = 4,562,695,248,432,118/77,478,934.99 - Step 6: Final answer
x = 58,889,493.63
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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.