Home / 56,527.68-78,009.48-31,378.80

Finding the Fourth Proportional to 56,527.68, 78,009.48 and 31,378.80

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Solution

The fourth proportional to 56,527.68, 78,009.48 and 31,378.80 is: 43,303.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,527.68 : 78,009.48 = 31,378.80 : x
  2. Step 2: Convert to fraction form
    56,527.68/78,009.48 = 31,378.80/x
  3. Step 3: Cross multiply
    56,527.68x = 78,009.48 × 31,378.80
  4. Step 4: Simplify right side
    56,527.68x = 2,447,843,871.02
  5. Step 5: Solve for x
    x = 2,447,843,871.02/56,527.68
  6. Step 6: Final answer
    x = 43,303.46

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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.