Home / 77,619,079.80-116,428,965.30-20,107,265.40

Finding the Fourth Proportional to 77,619,079.80, 116,428,965.30 and 20,107,265.40

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Solution

The fourth proportional to 77,619,079.80, 116,428,965.30 and 20,107,265.40 is: 30,160,987.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,619,079.80 : 116,428,965.30 = 20,107,265.40 : x
  2. Step 2: Convert to fraction form
    77,619,079.80/116,428,965.30 = 20,107,265.40/x
  3. Step 3: Cross multiply
    77,619,079.80x = 116,428,965.30 × 20,107,265.40
  4. Step 4: Simplify right side
    77,619,079.80x = 2,341,068,105,534,490.50
  5. Step 5: Solve for x
    x = 2,341,068,105,534,490.50/77,619,079.80
  6. Step 6: Final answer
    x = 30,160,987.63

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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.