Home / 64,405,907.20-96,580,867.20-21,258,438.40

Finding the Fourth Proportional to 64,405,907.20, 96,580,867.20 and 21,258,438.40

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Solution

The fourth proportional to 64,405,907.20, 96,580,867.20 and 21,258,438.40 is: 31,878,417.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,405,907.20 : 96,580,867.20 = 21,258,438.40 : x
  2. Step 2: Convert to fraction form
    64,405,907.20/96,580,867.20 = 21,258,438.40/x
  3. Step 3: Cross multiply
    64,405,907.20x = 96,580,867.20 × 21,258,438.40
  4. Step 4: Simplify right side
    64,405,907.20x = 2,053,158,415,989,780.50
  5. Step 5: Solve for x
    x = 2,053,158,415,989,780.50/64,405,907.20
  6. Step 6: Final answer
    x = 31,878,417.76

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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.