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Finding the Fourth Proportional to 74,902,597.80, 112,353,896.70 and 21,049,909.80

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Solution

The fourth proportional to 74,902,597.80, 112,353,896.70 and 21,049,909.80 is: 31,574,864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,902,597.80 : 112,353,896.70 = 21,049,909.80 : x
  2. Step 2: Convert to fraction form
    74,902,597.80/112,353,896.70 = 21,049,909.80/x
  3. Step 3: Cross multiply
    74,902,597.80x = 112,353,896.70 × 21,049,909.80
  4. Step 4: Simplify right side
    74,902,597.80x = 2,365,039,391,213,518
  5. Step 5: Solve for x
    x = 2,365,039,391,213,518/74,902,597.80
  6. Step 6: Final answer
    x = 31,574,864.70

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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.