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Finding the Fourth Proportional to 64,977.20, 97,390.20 and 29,920.40

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Solution

The fourth proportional to 64,977.20, 97,390.20 and 29,920.40 is: 44,845.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,977.20 : 97,390.20 = 29,920.40 : x
  2. Step 2: Convert to fraction form
    64,977.20/97,390.20 = 29,920.40/x
  3. Step 3: Cross multiply
    64,977.20x = 97,390.20 × 29,920.40
  4. Step 4: Simplify right side
    64,977.20x = 2,913,953,740.08
  5. Step 5: Solve for x
    x = 2,913,953,740.08/64,977.20
  6. Step 6: Final answer
    x = 44,845.79

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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.