Home / 85,552,020.80-128,328,031.20-66,441,723.20

Finding the Fourth Proportional to 85,552,020.80, 128,328,031.20 and 66,441,723.20

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Solution

The fourth proportional to 85,552,020.80, 128,328,031.20 and 66,441,723.20 is: 99,662,584.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,552,020.80 : 128,328,031.20 = 66,441,723.20 : x
  2. Step 2: Convert to fraction form
    85,552,020.80/128,328,031.20 = 66,441,723.20/x
  3. Step 3: Cross multiply
    85,552,020.80x = 128,328,031.20 × 66,441,723.20
  4. Step 4: Simplify right side
    85,552,020.80x = 8,526,335,527,791,364
  5. Step 5: Solve for x
    x = 8,526,335,527,791,364/85,552,020.80
  6. Step 6: Final answer
    x = 99,662,584.80

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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.