Home / 85,866,276.80-128,948,714.40-45,555,492.80

Finding the Fourth Proportional to 85,866,276.80, 128,948,714.40 and 45,555,492.80

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Solution

The fourth proportional to 85,866,276.80, 128,948,714.40 and 45,555,492.80 is: 68,412,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,866,276.80 : 128,948,714.40 = 45,555,492.80 : x
  2. Step 2: Convert to fraction form
    85,866,276.80/128,948,714.40 = 45,555,492.80/x
  3. Step 3: Cross multiply
    85,866,276.80x = 128,948,714.40 × 45,555,492.80
  4. Step 4: Simplify right side
    85,866,276.80x = 5,874,322,230,418,456
  5. Step 5: Solve for x
    x = 5,874,322,230,418,456/85,866,276.80
  6. Step 6: Final answer
    x = 68,412,448.39

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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.