Home / 66,429,698.20-99,625,884.90-21,005,416.60

Finding the Fourth Proportional to 66,429,698.20, 99,625,884.90 and 21,005,416.60

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Solution

The fourth proportional to 66,429,698.20, 99,625,884.90 and 21,005,416.60 is: 31,502,223.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,429,698.20 : 99,625,884.90 = 21,005,416.60 : x
  2. Step 2: Convert to fraction form
    66,429,698.20/99,625,884.90 = 21,005,416.60/x
  3. Step 3: Cross multiply
    66,429,698.20x = 99,625,884.90 × 21,005,416.60
  4. Step 4: Simplify right side
    66,429,698.20x = 2,092,683,216,468,149.50
  5. Step 5: Solve for x
    x = 2,092,683,216,468,149.50/66,429,698.20
  6. Step 6: Final answer
    x = 31,502,223.75

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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.