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Finding the Fourth Proportional to 47,208.80, 70,813.20 and 43,272.20

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Solution

The fourth proportional to 47,208.80, 70,813.20 and 43,272.20 is: 64,908.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,208.80 : 70,813.20 = 43,272.20 : x
  2. Step 2: Convert to fraction form
    47,208.80/70,813.20 = 43,272.20/x
  3. Step 3: Cross multiply
    47,208.80x = 70,813.20 × 43,272.20
  4. Step 4: Simplify right side
    47,208.80x = 3,064,242,953.04
  5. Step 5: Solve for x
    x = 3,064,242,953.04/47,208.80
  6. Step 6: Final answer
    x = 64,908.30

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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.