Home / 47,819.61-66,038.40-39,405.12

Finding the Fourth Proportional to 47,819.61, 66,038.40 and 39,405.12

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Solution

The fourth proportional to 47,819.61, 66,038.40 and 39,405.12 is: 54,418.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,819.61 : 66,038.40 = 39,405.12 : x
  2. Step 2: Convert to fraction form
    47,819.61/66,038.40 = 39,405.12/x
  3. Step 3: Cross multiply
    47,819.61x = 66,038.40 × 39,405.12
  4. Step 4: Simplify right side
    47,819.61x = 2,602,251,076.61
  5. Step 5: Solve for x
    x = 2,602,251,076.61/47,819.61
  6. Step 6: Final answer
    x = 54,418.07

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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.