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Finding the Fourth Proportional to 64,987.71, 97,481.56 and 35,430.40

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Solution

The fourth proportional to 64,987.71, 97,481.56 and 35,430.40 is: 53,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,987.71 : 97,481.56 = 35,430.40 : x
  2. Step 2: Convert to fraction form
    64,987.71/97,481.56 = 35,430.40/x
  3. Step 3: Cross multiply
    64,987.71x = 97,481.56 × 35,430.40
  4. Step 4: Simplify right side
    64,987.71x = 3,453,810,663.42
  5. Step 5: Solve for x
    x = 3,453,810,663.42/64,987.71
  6. Step 6: Final answer
    x = 53,145.60

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1.5x scale

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.