Home / 90,837,661.60-136,256,492.40-66,444,519.70

Finding the Fourth Proportional to 90,837,661.60, 136,256,492.40 and 66,444,519.70

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Solution

The fourth proportional to 90,837,661.60, 136,256,492.40 and 66,444,519.70 is: 99,666,779.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,837,661.60 : 136,256,492.40 = 66,444,519.70 : x
  2. Step 2: Convert to fraction form
    90,837,661.60/136,256,492.40 = 66,444,519.70/x
  3. Step 3: Cross multiply
    90,837,661.60x = 136,256,492.40 × 66,444,519.70
  4. Step 4: Simplify right side
    90,837,661.60x = 9,053,497,193,524,702
  5. Step 5: Solve for x
    x = 9,053,497,193,524,702/90,837,661.60
  6. Step 6: Final answer
    x = 99,666,779.55

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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.