Home / 49,971.20-74,985.60-18,828.80

Finding the Fourth Proportional to 49,971.20, 74,985.60 and 18,828.80

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Solution

The fourth proportional to 49,971.20, 74,985.60 and 18,828.80 is: 28,254.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,971.20 : 74,985.60 = 18,828.80 : x
  2. Step 2: Convert to fraction form
    49,971.20/74,985.60 = 18,828.80/x
  3. Step 3: Cross multiply
    49,971.20x = 74,985.60 × 18,828.80
  4. Step 4: Simplify right side
    49,971.20x = 1,411,888,865.28
  5. Step 5: Solve for x
    x = 1,411,888,865.28/49,971.20
  6. Step 6: Final answer
    x = 28,254.05

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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.