Home / 57,047.45-78,718.63-31,550.35

Finding the Fourth Proportional to 57,047.45, 78,718.63 and 31,550.35

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Solution

The fourth proportional to 57,047.45, 78,718.63 and 31,550.35 is: 43,535.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,047.45 : 78,718.63 = 31,550.35 : x
  2. Step 2: Convert to fraction form
    57,047.45/78,718.63 = 31,550.35/x
  3. Step 3: Cross multiply
    57,047.45x = 78,718.63 × 31,550.35
  4. Step 4: Simplify right side
    57,047.45x = 2,483,600,328.02
  5. Step 5: Solve for x
    x = 2,483,600,328.02/57,047.45
  6. Step 6: Final answer
    x = 43,535.69

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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.