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Finding the Fourth Proportional to 97,420.40, 145,871.40 and 62,169.20

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Solution

The fourth proportional to 97,420.40, 145,871.40 and 62,169.20 is: 93,088.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,420.40 : 145,871.40 = 62,169.20 : x
  2. Step 2: Convert to fraction form
    97,420.40/145,871.40 = 62,169.20/x
  3. Step 3: Cross multiply
    97,420.40x = 145,871.40 × 62,169.20
  4. Step 4: Simplify right side
    97,420.40x = 9,068,708,240.88
  5. Step 5: Solve for x
    x = 9,068,708,240.88/97,420.40
  6. Step 6: Final answer
    x = 93,088.39

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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.