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Finding the Fourth Proportional to 64,940.20, 97,410.30 and 47,228.20

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Solution

The fourth proportional to 64,940.20, 97,410.30 and 47,228.20 is: 70,842.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,940.20 : 97,410.30 = 47,228.20 : x
  2. Step 2: Convert to fraction form
    64,940.20/97,410.30 = 47,228.20/x
  3. Step 3: Cross multiply
    64,940.20x = 97,410.30 × 47,228.20
  4. Step 4: Simplify right side
    64,940.20x = 4,600,513,130.46
  5. Step 5: Solve for x
    x = 4,600,513,130.46/64,940.20
  6. Step 6: Final answer
    x = 70,842.30

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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.