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Finding the Fourth Proportional to 64,977.90, 97,478.99 and 20,592.74

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Solution

The fourth proportional to 64,977.90, 97,478.99 and 20,592.74 is: 30,892.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,977.90 : 97,478.99 = 20,592.74 : x
  2. Step 2: Convert to fraction form
    64,977.90/97,478.99 = 20,592.74/x
  3. Step 3: Cross multiply
    64,977.90x = 97,478.99 × 20,592.74
  4. Step 4: Simplify right side
    64,977.90x = 2,007,359,060.62
  5. Step 5: Solve for x
    x = 2,007,359,060.62/64,977.90
  6. Step 6: Final answer
    x = 30,892.95

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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.