Home / 66,415,878.40-99,698,467.20-51,336,659.20

Finding the Fourth Proportional to 66,415,878.40, 99,698,467.20 and 51,336,659.20

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Solution

The fourth proportional to 66,415,878.40, 99,698,467.20 and 51,336,659.20 is: 77,062,689.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,415,878.40 : 99,698,467.20 = 51,336,659.20 : x
  2. Step 2: Convert to fraction form
    66,415,878.40/99,698,467.20 = 51,336,659.20/x
  3. Step 3: Cross multiply
    66,415,878.40x = 99,698,467.20 × 51,336,659.20
  4. Step 4: Simplify right side
    66,415,878.40x = 5,118,186,233,408,779
  5. Step 5: Solve for x
    x = 5,118,186,233,408,779/66,415,878.40
  6. Step 6: Final answer
    x = 77,062,689.78

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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.