Finding the Fourth Proportional to 28,449,214.63, 42,630,715.90 and 18,830,132.53
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Solution
The fourth proportional to 28,449,214.63, 42,630,715.90 and 18,830,132.53 is: 28,216,667.51
Step by Step Solution
- Step 1: Write the proportion equation
28,449,214.63 : 42,630,715.90 = 18,830,132.53 : x - Step 2: Convert to fraction form
28,449,214.63/42,630,715.90 = 18,830,132.53/x - Step 3: Cross multiply
28,449,214.63x = 42,630,715.90 × 18,830,132.53 - Step 4: Simplify right side
28,449,214.63x = 802,742,030,245,778.25 - Step 5: Solve for x
x = 802,742,030,245,778.25/28,449,214.63 - Step 6: Final answer
x = 28,216,667.51
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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.