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Finding the Fourth Proportional to 72,953.70, 109,430.55 and 43,356.30

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Solution

The fourth proportional to 72,953.70, 109,430.55 and 43,356.30 is: 65,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,953.70 : 109,430.55 = 43,356.30 : x
  2. Step 2: Convert to fraction form
    72,953.70/109,430.55 = 43,356.30/x
  3. Step 3: Cross multiply
    72,953.70x = 109,430.55 × 43,356.30
  4. Step 4: Simplify right side
    72,953.70x = 4,744,503,754.97
  5. Step 5: Solve for x
    x = 4,744,503,754.97/72,953.70
  6. Step 6: Final answer
    x = 65,034.45

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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.