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Finding the Fourth Proportional to 64,246.40, 90,006.40 and 64,246.40

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Solution

The fourth proportional to 64,246.40, 90,006.40 and 64,246.40 is: 90,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,246.40 : 90,006.40 = 64,246.40 : x
  2. Step 2: Convert to fraction form
    64,246.40/90,006.40 = 64,246.40/x
  3. Step 3: Cross multiply
    64,246.40x = 90,006.40 × 64,246.40
  4. Step 4: Simplify right side
    64,246.40x = 5,782,587,176.96
  5. Step 5: Solve for x
    x = 5,782,587,176.96/64,246.40
  6. Step 6: Final answer
    x = 90,006.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.