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Finding the Fourth Proportional to 65,787.60, 98,681.40 and 58,400.40

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Solution

The fourth proportional to 65,787.60, 98,681.40 and 58,400.40 is: 87,600.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,787.60 : 98,681.40 = 58,400.40 : x
  2. Step 2: Convert to fraction form
    65,787.60/98,681.40 = 58,400.40/x
  3. Step 3: Cross multiply
    65,787.60x = 98,681.40 × 58,400.40
  4. Step 4: Simplify right side
    65,787.60x = 5,763,033,232.56
  5. Step 5: Solve for x
    x = 5,763,033,232.56/65,787.60
  6. Step 6: Final answer
    x = 87,600.60

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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.