Finding the Fourth Proportional to 77,128,985.64, 115,694,156.42 and 19,621,317.63
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Solution
The fourth proportional to 77,128,985.64, 115,694,156.42 and 19,621,317.63 is: 29,432,148.91
Step by Step Solution
- Step 1: Write the proportion equation
77,128,985.64 : 115,694,156.42 = 19,621,317.63 : x - Step 2: Convert to fraction form
77,128,985.64/115,694,156.42 = 19,621,317.63/x - Step 3: Cross multiply
77,128,985.64x = 115,694,156.42 × 19,621,317.63 - Step 4: Simplify right side
77,128,985.64x = 2,270,071,790,522,306 - Step 5: Solve for x
x = 2,270,071,790,522,306/77,128,985.64 - Step 6: Final answer
x = 29,432,148.91
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.