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Finding the Fourth Proportional to 64,820.20, 97,254.60 and 25,405.60

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Solution

The fourth proportional to 64,820.20, 97,254.60 and 25,405.60 is: 38,117.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,820.20 : 97,254.60 = 25,405.60 : x
  2. Step 2: Convert to fraction form
    64,820.20/97,254.60 = 25,405.60/x
  3. Step 3: Cross multiply
    64,820.20x = 97,254.60 × 25,405.60
  4. Step 4: Simplify right side
    64,820.20x = 2,470,811,465.76
  5. Step 5: Solve for x
    x = 2,470,811,465.76/64,820.20
  6. Step 6: Final answer
    x = 38,117.92

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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.