Finding the Fourth Proportional to 7,220,982.12, 10,767,831.18 and 7,156,225.08
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Solution
The fourth proportional to 7,220,982.12, 10,767,831.18 and 7,156,225.08 is: 10,671,266.36
Step by Step Solution
- Step 1: Write the proportion equation
7,220,982.12 : 10,767,831.18 = 7,156,225.08 : x - Step 2: Convert to fraction form
7,220,982.12/10,767,831.18 = 7,156,225.08/x - Step 3: Cross multiply
7,220,982.12x = 10,767,831.18 × 7,156,225.08 - Step 4: Simplify right side
7,220,982.12x = 77,057,023,547,522 - Step 5: Solve for x
x = 77,057,023,547,522/7,220,982.12 - Step 6: Final answer
x = 10,671,266.36
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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.