Home / 76,565,420.40-114,932,111.40-47,843,986.80

Finding the Fourth Proportional to 76,565,420.40, 114,932,111.40 and 47,843,986.80

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Solution

The fourth proportional to 76,565,420.40, 114,932,111.40 and 47,843,986.80 is: 71,818,457.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,565,420.40 : 114,932,111.40 = 47,843,986.80 : x
  2. Step 2: Convert to fraction form
    76,565,420.40/114,932,111.40 = 47,843,986.80/x
  3. Step 3: Cross multiply
    76,565,420.40x = 114,932,111.40 × 47,843,986.80
  4. Step 4: Simplify right side
    76,565,420.40x = 5,498,810,420,717,729
  5. Step 5: Solve for x
    x = 5,498,810,420,717,729/76,565,420.40
  6. Step 6: Final answer
    x = 71,818,457.89

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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.