Home / 53,801.20-74,254.72-31,140.80

Finding the Fourth Proportional to 53,801.20, 74,254.72 and 31,140.80

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Solution

The fourth proportional to 53,801.20, 74,254.72 and 31,140.80 is: 42,979.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,801.20 : 74,254.72 = 31,140.80 : x
  2. Step 2: Convert to fraction form
    53,801.20/74,254.72 = 31,140.80/x
  3. Step 3: Cross multiply
    53,801.20x = 74,254.72 × 31,140.80
  4. Step 4: Simplify right side
    53,801.20x = 2,312,351,384.58
  5. Step 5: Solve for x
    x = 2,312,351,384.58/53,801.20
  6. Step 6: Final answer
    x = 42,979.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.