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Finding the Fourth Proportional to 53,285.94, 79,852.71 and 39,134.94

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Solution

The fourth proportional to 53,285.94, 79,852.71 and 39,134.94 is: 58,646.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,285.94 : 79,852.71 = 39,134.94 : x
  2. Step 2: Convert to fraction form
    53,285.94/79,852.71 = 39,134.94/x
  3. Step 3: Cross multiply
    53,285.94x = 79,852.71 × 39,134.94
  4. Step 4: Simplify right side
    53,285.94x = 3,125,031,014.69
  5. Step 5: Solve for x
    x = 3,125,031,014.69/53,285.94
  6. Step 6: Final answer
    x = 58,646.45

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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.