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Finding the Fourth Proportional to 72,473.36, 99,970.76 and 45,573.20

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Solution

The fourth proportional to 72,473.36, 99,970.76 and 45,573.20 is: 62,864.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,473.36 : 99,970.76 = 45,573.20 : x
  2. Step 2: Convert to fraction form
    72,473.36/99,970.76 = 45,573.20/x
  3. Step 3: Cross multiply
    72,473.36x = 99,970.76 × 45,573.20
  4. Step 4: Simplify right side
    72,473.36x = 4,555,987,439.63
  5. Step 5: Solve for x
    x = 4,555,987,439.63/72,473.36
  6. Step 6: Final answer
    x = 62,864.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.