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Finding the Fourth Proportional to 66,165.68, 91,332.60 and 43,816.88

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Solution

The fourth proportional to 66,165.68, 91,332.60 and 43,816.88 is: 60,483.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,165.68 : 91,332.60 = 43,816.88 : x
  2. Step 2: Convert to fraction form
    66,165.68/91,332.60 = 43,816.88/x
  3. Step 3: Cross multiply
    66,165.68x = 91,332.60 × 43,816.88
  4. Step 4: Simplify right side
    66,165.68x = 4,001,909,574.29
  5. Step 5: Solve for x
    x = 4,001,909,574.29/66,165.68
  6. Step 6: Final answer
    x = 60,483.16

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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.