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Finding the Fourth Proportional to 66,506.76, 99,707.28 and 38,395.02

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Solution

The fourth proportional to 66,506.76, 99,707.28 and 38,395.02 is: 57,562.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,506.76 : 99,707.28 = 38,395.02 : x
  2. Step 2: Convert to fraction form
    66,506.76/99,707.28 = 38,395.02/x
  3. Step 3: Cross multiply
    66,506.76x = 99,707.28 × 38,395.02
  4. Step 4: Simplify right side
    66,506.76x = 3,828,263,009.75
  5. Step 5: Solve for x
    x = 3,828,263,009.75/66,506.76
  6. Step 6: Final answer
    x = 57,562.01

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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.