Home / 53,285.50-79,950.93-20,000.71

Finding the Fourth Proportional to 53,285.50, 79,950.93 and 20,000.71

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Solution

The fourth proportional to 53,285.50, 79,950.93 and 20,000.71 is: 30,009.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,285.50 : 79,950.93 = 20,000.71 : x
  2. Step 2: Convert to fraction form
    53,285.50/79,950.93 = 20,000.71/x
  3. Step 3: Cross multiply
    53,285.50x = 79,950.93 × 20,000.71
  4. Step 4: Simplify right side
    53,285.50x = 1,599,075,365.16
  5. Step 5: Solve for x
    x = 1,599,075,365.16/53,285.50
  6. Step 6: Final answer
    x = 30,009.58

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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.