Finding the Fourth Proportional to 86,660,646.74, 119,521,959.90 and 76,184,263.16
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Solution
The fourth proportional to 86,660,646.74, 119,521,959.90 and 76,184,263.16 is: 105,072,980.52
Step by Step Solution
- Step 1: Write the proportion equation
86,660,646.74 : 119,521,959.90 = 76,184,263.16 : x - Step 2: Convert to fraction form
86,660,646.74/119,521,959.90 = 76,184,263.16/x - Step 3: Cross multiply
86,660,646.74x = 119,521,959.90 × 76,184,263.16 - Step 4: Simplify right side
86,660,646.74x = 9,105,692,446,420,568 - Step 5: Solve for x
x = 9,105,692,446,420,568/86,660,646.74 - Step 6: Final answer
x = 105,072,980.52
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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.