Home / 80,937,287.80-121,405,931.70-72,434,231.80

Finding the Fourth Proportional to 80,937,287.80, 121,405,931.70 and 72,434,231.80

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Solution

The fourth proportional to 80,937,287.80, 121,405,931.70 and 72,434,231.80 is: 108,651,347.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,937,287.80 : 121,405,931.70 = 72,434,231.80 : x
  2. Step 2: Convert to fraction form
    80,937,287.80/121,405,931.70 = 72,434,231.80/x
  3. Step 3: Cross multiply
    80,937,287.80x = 121,405,931.70 × 72,434,231.80
  4. Step 4: Simplify right side
    80,937,287.80x = 8,793,945,398,652,768
  5. Step 5: Solve for x
    x = 8,793,945,398,652,768/80,937,287.80
  6. Step 6: Final answer
    x = 108,651,347.70

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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.