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Finding the Fourth Proportional to 48,260.40, 72,390.60 and 40,970.40

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Solution

The fourth proportional to 48,260.40, 72,390.60 and 40,970.40 is: 61,455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,260.40 : 72,390.60 = 40,970.40 : x
  2. Step 2: Convert to fraction form
    48,260.40/72,390.60 = 40,970.40/x
  3. Step 3: Cross multiply
    48,260.40x = 72,390.60 × 40,970.40
  4. Step 4: Simplify right side
    48,260.40x = 2,965,871,838.24
  5. Step 5: Solve for x
    x = 2,965,871,838.24/48,260.40
  6. Step 6: Final answer
    x = 61,455.60

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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.