Home / 64,688.64-89,293.92-40,830.96

Finding the Fourth Proportional to 64,688.64, 89,293.92 and 40,830.96

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Solution

The fourth proportional to 64,688.64, 89,293.92 and 40,830.96 is: 56,361.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,688.64 : 89,293.92 = 40,830.96 : x
  2. Step 2: Convert to fraction form
    64,688.64/89,293.92 = 40,830.96/x
  3. Step 3: Cross multiply
    64,688.64x = 89,293.92 × 40,830.96
  4. Step 4: Simplify right side
    64,688.64x = 3,645,956,475.76
  5. Step 5: Solve for x
    x = 3,645,956,475.76/64,688.64
  6. Step 6: Final answer
    x = 56,361.62

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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.