Home / 56,530.80-78,012.64-31,038.81

Finding the Fourth Proportional to 56,530.80, 78,012.64 and 31,038.81

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Solution

The fourth proportional to 56,530.80, 78,012.64 and 31,038.81 is: 42,833.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,530.80 : 78,012.64 = 31,038.81 : x
  2. Step 2: Convert to fraction form
    56,530.80/78,012.64 = 31,038.81/x
  3. Step 3: Cross multiply
    56,530.80x = 78,012.64 × 31,038.81
  4. Step 4: Simplify right side
    56,530.80x = 2,421,419,782.93
  5. Step 5: Solve for x
    x = 2,421,419,782.93/56,530.80
  6. Step 6: Final answer
    x = 42,833.64

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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.