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Finding the Fourth Proportional to 64,568.64, 89,111.58 and 39,088.92

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Solution

The fourth proportional to 64,568.64, 89,111.58 and 39,088.92 is: 53,946.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,568.64 : 89,111.58 = 39,088.92 : x
  2. Step 2: Convert to fraction form
    64,568.64/89,111.58 = 39,088.92/x
  3. Step 3: Cross multiply
    64,568.64x = 89,111.58 × 39,088.92
  4. Step 4: Simplify right side
    64,568.64x = 3,483,275,421.69
  5. Step 5: Solve for x
    x = 3,483,275,421.69/64,568.64
  6. Step 6: Final answer
    x = 53,946.86

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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.