Home / 56,555.12-78,048.24-31,409.36

Finding the Fourth Proportional to 56,555.12, 78,048.24 and 31,409.36

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Solution

The fourth proportional to 56,555.12, 78,048.24 and 31,409.36 is: 43,346.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,555.12 : 78,048.24 = 31,409.36 : x
  2. Step 2: Convert to fraction form
    56,555.12/78,048.24 = 31,409.36/x
  3. Step 3: Cross multiply
    56,555.12x = 78,048.24 × 31,409.36
  4. Step 4: Simplify right side
    56,555.12x = 2,451,445,267.53
  5. Step 5: Solve for x
    x = 2,451,445,267.53/56,555.12
  6. Step 6: Final answer
    x = 43,346.12

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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.