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Finding the Fourth Proportional to 64,572.39, 89,111.54 and 35,500.40

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Solution

The fourth proportional to 64,572.39, 89,111.54 and 35,500.40 is: 48,991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,572.39 : 89,111.54 = 35,500.40 : x
  2. Step 2: Convert to fraction form
    64,572.39/89,111.54 = 35,500.40/x
  3. Step 3: Cross multiply
    64,572.39x = 89,111.54 × 35,500.40
  4. Step 4: Simplify right side
    64,572.39x = 3,163,494,691.56
  5. Step 5: Solve for x
    x = 3,163,494,691.56/64,572.39
  6. Step 6: Final answer
    x = 48,991.45

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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.