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Finding the Fourth Proportional to 97,209.60, 145,814.40 and 57,746.40

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Solution

The fourth proportional to 97,209.60, 145,814.40 and 57,746.40 is: 86,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,209.60 : 145,814.40 = 57,746.40 : x
  2. Step 2: Convert to fraction form
    97,209.60/145,814.40 = 57,746.40/x
  3. Step 3: Cross multiply
    97,209.60x = 145,814.40 × 57,746.40
  4. Step 4: Simplify right side
    97,209.60x = 8,420,256,668.16
  5. Step 5: Solve for x
    x = 8,420,256,668.16/97,209.60
  6. Step 6: Final answer
    x = 86,619.60

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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.