Home / 87,973,807.20-121,398,019.68-48,813,100.80

Finding the Fourth Proportional to 87,973,807.20, 121,398,019.68 and 48,813,100.80

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Solution

The fourth proportional to 87,973,807.20, 121,398,019.68 and 48,813,100.80 is: 67,358,841.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,973,807.20 : 121,398,019.68 = 48,813,100.80 : x
  2. Step 2: Convert to fraction form
    87,973,807.20/121,398,019.68 = 48,813,100.80/x
  3. Step 3: Cross multiply
    87,973,807.20x = 121,398,019.68 × 48,813,100.80
  4. Step 4: Simplify right side
    87,973,807.20x = 5,925,813,771,560,224
  5. Step 5: Solve for x
    x = 5,925,813,771,560,224/87,973,807.20
  6. Step 6: Final answer
    x = 67,358,841.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.