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Finding the Fourth Proportional to 66,403.32, 99,526.44 and 65,663.40

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Solution

The fourth proportional to 66,403.32, 99,526.44 and 65,663.40 is: 98,417.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,403.32 : 99,526.44 = 65,663.40 : x
  2. Step 2: Convert to fraction form
    66,403.32/99,526.44 = 65,663.40/x
  3. Step 3: Cross multiply
    66,403.32x = 99,526.44 × 65,663.40
  4. Step 4: Simplify right side
    66,403.32x = 6,535,244,440.30
  5. Step 5: Solve for x
    x = 6,535,244,440.30/66,403.32
  6. Step 6: Final answer
    x = 98,417.44

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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.