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Finding the Fourth Proportional to 70,125.47, 96,779.24 and 39,904.30

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Solution

The fourth proportional to 70,125.47, 96,779.24 and 39,904.30 is: 55,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,125.47 : 96,779.24 = 39,904.30 : x
  2. Step 2: Convert to fraction form
    70,125.47/96,779.24 = 39,904.30/x
  3. Step 3: Cross multiply
    70,125.47x = 96,779.24 × 39,904.30
  4. Step 4: Simplify right side
    70,125.47x = 3,861,907,826.73
  5. Step 5: Solve for x
    x = 3,861,907,826.73/70,125.47
  6. Step 6: Final answer
    x = 55,071.40

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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.