Home / 56,277.72-77,660.34-30,779.14

Finding the Fourth Proportional to 56,277.72, 77,660.34 and 30,779.14

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Solution

The fourth proportional to 56,277.72, 77,660.34 and 30,779.14 is: 42,473.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,277.72 : 77,660.34 = 30,779.14 : x
  2. Step 2: Convert to fraction form
    56,277.72/77,660.34 = 30,779.14/x
  3. Step 3: Cross multiply
    56,277.72x = 77,660.34 × 30,779.14
  4. Step 4: Simplify right side
    56,277.72x = 2,390,318,477.31
  5. Step 5: Solve for x
    x = 2,390,318,477.31/56,277.72
  6. Step 6: Final answer
    x = 42,473.62

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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.