Finding the Fourth Proportional to 57,742,421.68, 79,657,831.21 and 51,133,745.08
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Solution
The fourth proportional to 57,742,421.68, 79,657,831.21 and 51,133,745.08 is: 70,540,914.57
Step by Step Solution
- Step 1: Write the proportion equation
57,742,421.68 : 79,657,831.21 = 51,133,745.08 : x - Step 2: Convert to fraction form
57,742,421.68/79,657,831.21 = 51,133,745.08/x - Step 3: Cross multiply
57,742,421.68x = 79,657,831.21 × 51,133,745.08 - Step 4: Simplify right side
57,742,421.68x = 4,073,203,234,717,807.50 - Step 5: Solve for x
x = 4,073,203,234,717,807.50/57,742,421.68 - Step 6: Final answer
x = 70,540,914.57
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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.