Home / 85,500,489.60-128,330,913.60-45,139,939.20

Finding the Fourth Proportional to 85,500,489.60, 128,330,913.60 and 45,139,939.20

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Solution

The fourth proportional to 85,500,489.60, 128,330,913.60 and 45,139,939.20 is: 67,752,239.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,500,489.60 : 128,330,913.60 = 45,139,939.20 : x
  2. Step 2: Convert to fraction form
    85,500,489.60/128,330,913.60 = 45,139,939.20/x
  3. Step 3: Cross multiply
    85,500,489.60x = 128,330,913.60 × 45,139,939.20
  4. Step 4: Simplify right side
    85,500,489.60x = 5,792,849,637,384,453
  5. Step 5: Solve for x
    x = 5,792,849,637,384,453/85,500,489.60
  6. Step 6: Final answer
    x = 67,752,239.37

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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.