Finding the Fourth Proportional to 42,875,715.34, 64,313,445.74 and 12,170,320.68
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Solution
The fourth proportional to 42,875,715.34, 64,313,445.74 and 12,170,320.68 is: 18,255,444.90
Step by Step Solution
- Step 1: Write the proportion equation
42,875,715.34 : 64,313,445.74 = 12,170,320.68 : x - Step 2: Convert to fraction form
42,875,715.34/64,313,445.74 = 12,170,320.68/x - Step 3: Cross multiply
42,875,715.34x = 64,313,445.74 × 12,170,320.68 - Step 4: Simplify right side
42,875,715.34x = 782,715,258,871,903.75 - Step 5: Solve for x
x = 782,715,258,871,903.75/42,875,715.34 - Step 6: Final answer
x = 18,255,444.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.