Finding the Fourth Proportional to 70,763,430.87, 97,637,376.51 and 39,812,307.03
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Solution
The fourth proportional to 70,763,430.87, 97,637,376.51 and 39,812,307.03 is: 54,931,892.98
Step by Step Solution
- Step 1: Write the proportion equation
70,763,430.87 : 97,637,376.51 = 39,812,307.03 : x - Step 2: Convert to fraction form
70,763,430.87/97,637,376.51 = 39,812,307.03/x - Step 3: Cross multiply
70,763,430.87x = 97,637,376.51 × 39,812,307.03 - Step 4: Simplify right side
70,763,430.87x = 3,887,169,211,219,830 - Step 5: Solve for x
x = 3,887,169,211,219,830/70,763,430.87 - Step 6: Final answer
x = 54,931,892.98
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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.