Home / 81,780,101.30-122,565,953.55-43,459,973.30

Finding the Fourth Proportional to 81,780,101.30, 122,565,953.55 and 43,459,973.30

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Solution

The fourth proportional to 81,780,101.30, 122,565,953.55 and 43,459,973.30 is: 65,134,586.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,780,101.30 : 122,565,953.55 = 43,459,973.30 : x
  2. Step 2: Convert to fraction form
    81,780,101.30/122,565,953.55 = 43,459,973.30/x
  3. Step 3: Cross multiply
    81,780,101.30x = 122,565,953.55 × 43,459,973.30
  4. Step 4: Simplify right side
    81,780,101.30x = 5,326,713,068,772,040
  5. Step 5: Solve for x
    x = 5,326,713,068,772,040/81,780,101.30
  6. Step 6: Final answer
    x = 65,134,586.34

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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.