Home / 56,856.28-78,462.02-31,707.40

Finding the Fourth Proportional to 56,856.28, 78,462.02 and 31,707.40

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Solution

The fourth proportional to 56,856.28, 78,462.02 and 31,707.40 is: 43,756.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,856.28 : 78,462.02 = 31,707.40 : x
  2. Step 2: Convert to fraction form
    56,856.28/78,462.02 = 31,707.40/x
  3. Step 3: Cross multiply
    56,856.28x = 78,462.02 × 31,707.40
  4. Step 4: Simplify right side
    56,856.28x = 2,487,826,652.95
  5. Step 5: Solve for x
    x = 2,487,826,652.95/56,856.28
  6. Step 6: Final answer
    x = 43,756.41

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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.