Home / 53,331.46-79,970.30-17,780.16

Finding the Fourth Proportional to 53,331.46, 79,970.30 and 17,780.16

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Solution

The fourth proportional to 53,331.46, 79,970.30 and 17,780.16 is: 26,661.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,331.46 : 79,970.30 = 17,780.16 : x
  2. Step 2: Convert to fraction form
    53,331.46/79,970.30 = 17,780.16/x
  3. Step 3: Cross multiply
    53,331.46x = 79,970.30 × 17,780.16
  4. Step 4: Simplify right side
    53,331.46x = 1,421,884,729.25
  5. Step 5: Solve for x
    x = 1,421,884,729.25/53,331.46
  6. Step 6: Final answer
    x = 26,661.28

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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.