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Finding the Fourth Proportional to 64,751.60, 97,069.80 and 38,428.40

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Solution

The fourth proportional to 64,751.60, 97,069.80 and 38,428.40 is: 57,608.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,751.60 : 97,069.80 = 38,428.40 : x
  2. Step 2: Convert to fraction form
    64,751.60/97,069.80 = 38,428.40/x
  3. Step 3: Cross multiply
    64,751.60x = 97,069.80 × 38,428.40
  4. Step 4: Simplify right side
    64,751.60x = 3,730,237,102.32
  5. Step 5: Solve for x
    x = 3,730,237,102.32/64,751.60
  6. Step 6: Final answer
    x = 57,608.42

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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.