Home / 66,861.04-100,132.14-38,721.64

Finding the Fourth Proportional to 66,861.04, 100,132.14 and 38,721.64

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Solution

The fourth proportional to 66,861.04, 100,132.14 and 38,721.64 is: 57,990.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,861.04 : 100,132.14 = 38,721.64 : x
  2. Step 2: Convert to fraction form
    66,861.04/100,132.14 = 38,721.64/x
  3. Step 3: Cross multiply
    66,861.04x = 100,132.14 × 38,721.64
  4. Step 4: Simplify right side
    66,861.04x = 3,877,280,677.51
  5. Step 5: Solve for x
    x = 3,877,280,677.51/66,861.04
  6. Step 6: Final answer
    x = 57,990.13

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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.