Home / 77,274,088.20-115,911,132.30-72,491,119.20

Finding the Fourth Proportional to 77,274,088.20, 115,911,132.30 and 72,491,119.20

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Solution

The fourth proportional to 77,274,088.20, 115,911,132.30 and 72,491,119.20 is: 108,736,678.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,274,088.20 : 115,911,132.30 = 72,491,119.20 : x
  2. Step 2: Convert to fraction form
    77,274,088.20/115,911,132.30 = 72,491,119.20/x
  3. Step 3: Cross multiply
    77,274,088.20x = 115,911,132.30 × 72,491,119.20
  4. Step 4: Simplify right side
    77,274,088.20x = 8,402,527,708,166,270
  5. Step 5: Solve for x
    x = 8,402,527,708,166,270/77,274,088.20
  6. Step 6: Final answer
    x = 108,736,678.80

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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.