Home / 71,582.40-98,779.50-39,749.40

Finding the Fourth Proportional to 71,582.40, 98,779.50 and 39,749.40

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Solution

The fourth proportional to 71,582.40, 98,779.50 and 39,749.40 is: 54,851.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,582.40 : 98,779.50 = 39,749.40 : x
  2. Step 2: Convert to fraction form
    71,582.40/98,779.50 = 39,749.40/x
  3. Step 3: Cross multiply
    71,582.40x = 98,779.50 × 39,749.40
  4. Step 4: Simplify right side
    71,582.40x = 3,926,425,857.30
  5. Step 5: Solve for x
    x = 3,926,425,857.30/71,582.40
  6. Step 6: Final answer
    x = 54,851.83

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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.