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Finding the Fourth Proportional to 37,979.40, 53,287.80 and 37,979.40

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Solution

The fourth proportional to 37,979.40, 53,287.80 and 37,979.40 is: 53,287.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,979.40 : 53,287.80 = 37,979.40 : x
  2. Step 2: Convert to fraction form
    37,979.40/53,287.80 = 37,979.40/x
  3. Step 3: Cross multiply
    37,979.40x = 53,287.80 × 37,979.40
  4. Step 4: Simplify right side
    37,979.40x = 2,023,838,671.32
  5. Step 5: Solve for x
    x = 2,023,838,671.32/37,979.40
  6. Step 6: Final answer
    x = 53,287.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.