Home / 94,787.20-130,746.25-72,076.40

Finding the Fourth Proportional to 94,787.20, 130,746.25 and 72,076.40

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Solution

The fourth proportional to 94,787.20, 130,746.25 and 72,076.40 is: 99,419.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,787.20 : 130,746.25 = 72,076.40 : x
  2. Step 2: Convert to fraction form
    94,787.20/130,746.25 = 72,076.40/x
  3. Step 3: Cross multiply
    94,787.20x = 130,746.25 × 72,076.40
  4. Step 4: Simplify right side
    94,787.20x = 9,423,718,866.83
  5. Step 5: Solve for x
    x = 9,423,718,866.83/94,787.20
  6. Step 6: Final answer
    x = 99,419.75

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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.