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Finding the Fourth Proportional to 60,669.46, 91,005.54 and 20,688.40

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Solution

The fourth proportional to 60,669.46, 91,005.54 and 20,688.40 is: 31,033.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,669.46 : 91,005.54 = 20,688.40 : x
  2. Step 2: Convert to fraction form
    60,669.46/91,005.54 = 20,688.40/x
  3. Step 3: Cross multiply
    60,669.46x = 91,005.54 × 20,688.40
  4. Step 4: Simplify right side
    60,669.46x = 1,882,759,013.74
  5. Step 5: Solve for x
    x = 1,882,759,013.74/60,669.46
  6. Step 6: Final answer
    x = 31,033.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.