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Finding the Fourth Proportional to 60,579.60, 90,966.60 and 40,945.20

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Solution

The fourth proportional to 60,579.60, 90,966.60 and 40,945.20 is: 61,483.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,579.60 : 90,966.60 = 40,945.20 : x
  2. Step 2: Convert to fraction form
    60,579.60/90,966.60 = 40,945.20/x
  3. Step 3: Cross multiply
    60,579.60x = 90,966.60 × 40,945.20
  4. Step 4: Simplify right side
    60,579.60x = 3,724,645,630.32
  5. Step 5: Solve for x
    x = 3,724,645,630.32/60,579.60
  6. Step 6: Final answer
    x = 61,483.50

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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.