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Finding the Fourth Proportional to 47,385.60, 71,078.40 and 19,737.60

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Solution

The fourth proportional to 47,385.60, 71,078.40 and 19,737.60 is: 29,606.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,385.60 : 71,078.40 = 19,737.60 : x
  2. Step 2: Convert to fraction form
    47,385.60/71,078.40 = 19,737.60/x
  3. Step 3: Cross multiply
    47,385.60x = 71,078.40 × 19,737.60
  4. Step 4: Simplify right side
    47,385.60x = 1,402,917,027.84
  5. Step 5: Solve for x
    x = 1,402,917,027.84/47,385.60
  6. Step 6: Final answer
    x = 29,606.40

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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.