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Finding the Fourth Proportional to 64,282.62, 88,718.85 and 38,790.30

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Solution

The fourth proportional to 64,282.62, 88,718.85 and 38,790.30 is: 53,535.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,282.62 : 88,718.85 = 38,790.30 : x
  2. Step 2: Convert to fraction form
    64,282.62/88,718.85 = 38,790.30/x
  3. Step 3: Cross multiply
    64,282.62x = 88,718.85 × 38,790.30
  4. Step 4: Simplify right side
    64,282.62x = 3,441,430,807.16
  5. Step 5: Solve for x
    x = 3,441,430,807.16/64,282.62
  6. Step 6: Final answer
    x = 53,535.94

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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.