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Finding the Fourth Proportional to 64,289.79, 88,705.58 and 38,800.31

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Solution

The fourth proportional to 64,289.79, 88,705.58 and 38,800.31 is: 53,535.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,289.79 : 88,705.58 = 38,800.31 : x
  2. Step 2: Convert to fraction form
    64,289.79/88,705.58 = 38,800.31/x
  3. Step 3: Cross multiply
    64,289.79x = 88,705.58 × 38,800.31
  4. Step 4: Simplify right side
    64,289.79x = 3,441,803,365.20
  5. Step 5: Solve for x
    x = 3,441,803,365.20/64,289.79
  6. Step 6: Final answer
    x = 53,535.77

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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.