Home / 64,631.20-89,196.24-48,690.40

Finding the Fourth Proportional to 64,631.20, 89,196.24 and 48,690.40

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Solution

The fourth proportional to 64,631.20, 89,196.24 and 48,690.40 is: 67,196.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,631.20 : 89,196.24 = 48,690.40 : x
  2. Step 2: Convert to fraction form
    64,631.20/89,196.24 = 48,690.40/x
  3. Step 3: Cross multiply
    64,631.20x = 89,196.24 × 48,690.40
  4. Step 4: Simplify right side
    64,631.20x = 4,343,000,604.10
  5. Step 5: Solve for x
    x = 4,343,000,604.10/64,631.20
  6. Step 6: Final answer
    x = 67,196.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.