Finding the Fourth Proportional to 79,128,632.17, 118,549,457.34 and 77,406,763.33
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Solution
The fourth proportional to 79,128,632.17, 118,549,457.34 and 77,406,763.33 is: 115,969,776.50
Step by Step Solution
- Step 1: Write the proportion equation
79,128,632.17 : 118,549,457.34 = 77,406,763.33 : x - Step 2: Convert to fraction form
79,128,632.17/118,549,457.34 = 77,406,763.33/x - Step 3: Cross multiply
79,128,632.17x = 118,549,457.34 × 77,406,763.33 - Step 4: Simplify right side
79,128,632.17x = 9,176,529,787,217,312 - Step 5: Solve for x
x = 9,176,529,787,217,312/79,128,632.17 - Step 6: Final answer
x = 115,969,776.50
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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.