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Finding the Fourth Proportional to 65,606.64, 90,539.16 and 37,316.40

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Solution

The fourth proportional to 65,606.64, 90,539.16 and 37,316.40 is: 51,497.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,606.64 : 90,539.16 = 37,316.40 : x
  2. Step 2: Convert to fraction form
    65,606.64/90,539.16 = 37,316.40/x
  3. Step 3: Cross multiply
    65,606.64x = 90,539.16 × 37,316.40
  4. Step 4: Simplify right side
    65,606.64x = 3,378,595,510.22
  5. Step 5: Solve for x
    x = 3,378,595,510.22/65,606.64
  6. Step 6: Final answer
    x = 51,497.77

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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.