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Finding the Fourth Proportional to 64,894.93, 97,341.78 and 20,521.69

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Solution

The fourth proportional to 64,894.93, 97,341.78 and 20,521.69 is: 30,782.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,894.93 : 97,341.78 = 20,521.69 : x
  2. Step 2: Convert to fraction form
    64,894.93/97,341.78 = 20,521.69/x
  3. Step 3: Cross multiply
    64,894.93x = 97,341.78 × 20,521.69
  4. Step 4: Simplify right side
    64,894.93x = 1,997,617,833.21
  5. Step 5: Solve for x
    x = 1,997,617,833.21/64,894.93
  6. Step 6: Final answer
    x = 30,782.34

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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.