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Finding the Fourth Proportional to 60,415.60, 90,623.40 and 43,740.40

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Solution

The fourth proportional to 60,415.60, 90,623.40 and 43,740.40 is: 65,610.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,415.60 : 90,623.40 = 43,740.40 : x
  2. Step 2: Convert to fraction form
    60,415.60/90,623.40 = 43,740.40/x
  3. Step 3: Cross multiply
    60,415.60x = 90,623.40 × 43,740.40
  4. Step 4: Simplify right side
    60,415.60x = 3,963,903,765.36
  5. Step 5: Solve for x
    x = 3,963,903,765.36/60,415.60
  6. Step 6: Final answer
    x = 65,610.60

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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.