Home / 56,609.40-78,129.72-40,746.36

Finding the Fourth Proportional to 56,609.40, 78,129.72 and 40,746.36

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Solution

The fourth proportional to 56,609.40, 78,129.72 and 40,746.36 is: 56,236.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,609.40 : 78,129.72 = 40,746.36 : x
  2. Step 2: Convert to fraction form
    56,609.40/78,129.72 = 40,746.36/x
  3. Step 3: Cross multiply
    56,609.40x = 78,129.72 × 40,746.36
  4. Step 4: Simplify right side
    56,609.40x = 3,183,501,697.82
  5. Step 5: Solve for x
    x = 3,183,501,697.82/56,609.40
  6. Step 6: Final answer
    x = 56,236.27

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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.