Finding the Fourth Proportional to 77,654,686.21, 107,165,709.99 and 42,849,618.01
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Solution
The fourth proportional to 77,654,686.21, 107,165,709.99 and 42,849,618.01 is: 59,133,710.54
Step by Step Solution
- Step 1: Write the proportion equation
77,654,686.21 : 107,165,709.99 = 42,849,618.01 : x - Step 2: Convert to fraction form
77,654,686.21/107,165,709.99 = 42,849,618.01/x - Step 3: Cross multiply
77,654,686.21x = 107,165,709.99 × 42,849,618.01 - Step 4: Simplify right side
77,654,686.21x = 4,592,009,736,091,865 - Step 5: Solve for x
x = 4,592,009,736,091,865/77,654,686.21 - Step 6: Final answer
x = 59,133,710.54
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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.