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Finding the Fourth Proportional to 64,954.81, 89,567.39 and 56,383.48

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Solution

The fourth proportional to 64,954.81, 89,567.39 and 56,383.48 is: 77,748.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,954.81 : 89,567.39 = 56,383.48 : x
  2. Step 2: Convert to fraction form
    64,954.81/89,567.39 = 56,383.48/x
  3. Step 3: Cross multiply
    64,954.81x = 89,567.39 × 56,383.48
  4. Step 4: Simplify right side
    64,954.81x = 5,050,121,071.46
  5. Step 5: Solve for x
    x = 5,050,121,071.46/64,954.81
  6. Step 6: Final answer
    x = 77,748.22

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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.