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Finding the Fourth Proportional to 89,395.60, 134,122.54 and 42,642.40

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Solution

The fourth proportional to 89,395.60, 134,122.54 and 42,642.40 is: 63,977.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,395.60 : 134,122.54 = 42,642.40 : x
  2. Step 2: Convert to fraction form
    89,395.60/134,122.54 = 42,642.40/x
  3. Step 3: Cross multiply
    89,395.60x = 134,122.54 × 42,642.40
  4. Step 4: Simplify right side
    89,395.60x = 5,719,306,999.70
  5. Step 5: Solve for x
    x = 5,719,306,999.70/89,395.60
  6. Step 6: Final answer
    x = 63,977.50

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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.