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Finding the Fourth Proportional to 72,940.60, 109,410.90 and 62,005.60

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Solution

The fourth proportional to 72,940.60, 109,410.90 and 62,005.60 is: 93,008.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,940.60 : 109,410.90 = 62,005.60 : x
  2. Step 2: Convert to fraction form
    72,940.60/109,410.90 = 62,005.60/x
  3. Step 3: Cross multiply
    72,940.60x = 109,410.90 × 62,005.60
  4. Step 4: Simplify right side
    72,940.60x = 6,784,088,501.04
  5. Step 5: Solve for x
    x = 6,784,088,501.04/72,940.60
  6. Step 6: Final answer
    x = 93,008.40

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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.