Finding the Fourth Proportional to 65,173,931.20, 97,823,882.40 and 39,664,763.20
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Solution
The fourth proportional to 65,173,931.20, 97,823,882.40 and 39,664,763.20 is: 59,535,477.75
Step by Step Solution
- Step 1: Write the proportion equation
65,173,931.20 : 97,823,882.40 = 39,664,763.20 : x - Step 2: Convert to fraction form
65,173,931.20/97,823,882.40 = 39,664,763.20/x - Step 3: Cross multiply
65,173,931.20x = 97,823,882.40 × 39,664,763.20 - Step 4: Simplify right side
65,173,931.20x = 3,880,161,130,700,648 - Step 5: Solve for x
x = 3,880,161,130,700,648/65,173,931.20 - Step 6: Final answer
x = 59,535,477.75
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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.