Home / 53,478.75-73,779.10-30,805.64

Finding the Fourth Proportional to 53,478.75, 73,779.10 and 30,805.64

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Solution

The fourth proportional to 53,478.75, 73,779.10 and 30,805.64 is: 42,499.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,478.75 : 73,779.10 = 30,805.64 : x
  2. Step 2: Convert to fraction form
    53,478.75/73,779.10 = 30,805.64/x
  3. Step 3: Cross multiply
    53,478.75x = 73,779.10 × 30,805.64
  4. Step 4: Simplify right side
    53,478.75x = 2,272,812,394.12
  5. Step 5: Solve for x
    x = 2,272,812,394.12/53,478.75
  6. Step 6: Final answer
    x = 42,499.36

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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.