Home / 53,037.20-79,586.80-19,780.16

Finding the Fourth Proportional to 53,037.20, 79,586.80 and 19,780.16

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Solution

The fourth proportional to 53,037.20, 79,586.80 and 19,780.16 is: 29,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,037.20 : 79,586.80 = 19,780.16 : x
  2. Step 2: Convert to fraction form
    53,037.20/79,586.80 = 19,780.16/x
  3. Step 3: Cross multiply
    53,037.20x = 79,586.80 × 19,780.16
  4. Step 4: Simplify right side
    53,037.20x = 1,574,239,637.89
  5. Step 5: Solve for x
    x = 1,574,239,637.89/53,037.20
  6. Step 6: Final answer
    x = 29,681.80

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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.