Home / 72,839,411.20-109,259,116.80-72,414,258.40

Finding the Fourth Proportional to 72,839,411.20, 109,259,116.80 and 72,414,258.40

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Solution

The fourth proportional to 72,839,411.20, 109,259,116.80 and 72,414,258.40 is: 108,621,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,839,411.20 : 109,259,116.80 = 72,414,258.40 : x
  2. Step 2: Convert to fraction form
    72,839,411.20/109,259,116.80 = 72,414,258.40/x
  3. Step 3: Cross multiply
    72,839,411.20x = 109,259,116.80 × 72,414,258.40
  4. Step 4: Simplify right side
    72,839,411.20x = 7,911,917,916,510,982
  5. Step 5: Solve for x
    x = 7,911,917,916,510,982/72,839,411.20
  6. Step 6: Final answer
    x = 108,621,387.60

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1.5x scale

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.