Home / 90,989,344.20-136,484,016.30-56,551,967.40

Finding the Fourth Proportional to 90,989,344.20, 136,484,016.30 and 56,551,967.40

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Solution

The fourth proportional to 90,989,344.20, 136,484,016.30 and 56,551,967.40 is: 84,827,951.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,989,344.20 : 136,484,016.30 = 56,551,967.40 : x
  2. Step 2: Convert to fraction form
    90,989,344.20/136,484,016.30 = 56,551,967.40/x
  3. Step 3: Cross multiply
    90,989,344.20x = 136,484,016.30 × 56,551,967.40
  4. Step 4: Simplify right side
    90,989,344.20x = 7,718,439,640,418,669
  5. Step 5: Solve for x
    x = 7,718,439,640,418,669/90,989,344.20
  6. Step 6: Final answer
    x = 84,827,951.10

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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.