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Finding the Fourth Proportional to 64,875.96, 89,472.92 and 42,206.68

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Solution

The fourth proportional to 64,875.96, 89,472.92 and 42,206.68 is: 58,208.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,875.96 : 89,472.92 = 42,206.68 : x
  2. Step 2: Convert to fraction form
    64,875.96/89,472.92 = 42,206.68/x
  3. Step 3: Cross multiply
    64,875.96x = 89,472.92 × 42,206.68
  4. Step 4: Simplify right side
    64,875.96x = 3,776,354,903.11
  5. Step 5: Solve for x
    x = 3,776,354,903.11/64,875.96
  6. Step 6: Final answer
    x = 58,208.85

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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.