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Finding the Fourth Proportional to 64,970.76, 89,632.50 and 43,713.12

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Solution

The fourth proportional to 64,970.76, 89,632.50 and 43,713.12 is: 60,305.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,970.76 : 89,632.50 = 43,713.12 : x
  2. Step 2: Convert to fraction form
    64,970.76/89,632.50 = 43,713.12/x
  3. Step 3: Cross multiply
    64,970.76x = 89,632.50 × 43,713.12
  4. Step 4: Simplify right side
    64,970.76x = 3,918,116,228.40
  5. Step 5: Solve for x
    x = 3,918,116,228.40/64,970.76
  6. Step 6: Final answer
    x = 60,305.84

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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.