Home / 85,866,276.30-128,948,713.65-45,555,492.30

Finding the Fourth Proportional to 85,866,276.30, 128,948,713.65 and 45,555,492.30

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Solution

The fourth proportional to 85,866,276.30, 128,948,713.65 and 45,555,492.30 is: 68,412,447.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,866,276.30 : 128,948,713.65 = 45,555,492.30 : x
  2. Step 2: Convert to fraction form
    85,866,276.30/128,948,713.65 = 45,555,492.30/x
  3. Step 3: Cross multiply
    85,866,276.30x = 128,948,713.65 × 45,555,492.30
  4. Step 4: Simplify right side
    85,866,276.30x = 5,874,322,131,777,480
  5. Step 5: Solve for x
    x = 5,874,322,131,777,480/85,866,276.30
  6. Step 6: Final answer
    x = 68,412,447.64

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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.