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Finding the Fourth Proportional to 65,358.08, 90,188.88 and 37,066.40

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Solution

The fourth proportional to 65,358.08, 90,188.88 and 37,066.40 is: 51,148.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,358.08 : 90,188.88 = 37,066.40 : x
  2. Step 2: Convert to fraction form
    65,358.08/90,188.88 = 37,066.40/x
  3. Step 3: Cross multiply
    65,358.08x = 90,188.88 × 37,066.40
  4. Step 4: Simplify right side
    65,358.08x = 3,342,977,101.63
  5. Step 5: Solve for x
    x = 3,342,977,101.63/65,358.08
  6. Step 6: Final answer
    x = 51,148.64

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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.