Home / 56,529.38-78,011.45-31,378.88

Finding the Fourth Proportional to 56,529.38, 78,011.45 and 31,378.88

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Solution

The fourth proportional to 56,529.38, 78,011.45 and 31,378.88 is: 43,303.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,529.38 : 78,011.45 = 31,378.88 : x
  2. Step 2: Convert to fraction form
    56,529.38/78,011.45 = 31,378.88/x
  3. Step 3: Cross multiply
    56,529.38x = 78,011.45 × 31,378.88
  4. Step 4: Simplify right side
    56,529.38x = 2,447,911,928.18
  5. Step 5: Solve for x
    x = 2,447,911,928.18/56,529.38
  6. Step 6: Final answer
    x = 43,303.36

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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.