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Finding the Fourth Proportional to 47,715.30, 71,572.95 and 45,528.30

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Solution

The fourth proportional to 47,715.30, 71,572.95 and 45,528.30 is: 68,292.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,715.30 : 71,572.95 = 45,528.30 : x
  2. Step 2: Convert to fraction form
    47,715.30/71,572.95 = 45,528.30/x
  3. Step 3: Cross multiply
    47,715.30x = 71,572.95 × 45,528.30
  4. Step 4: Simplify right side
    47,715.30x = 3,258,594,739.49
  5. Step 5: Solve for x
    x = 3,258,594,739.49/47,715.30
  6. Step 6: Final answer
    x = 68,292.45

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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.