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Finding the Fourth Proportional to 47,612.16, 65,695.32 and 28,750.32

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Solution

The fourth proportional to 47,612.16, 65,695.32 and 28,750.32 is: 39,669.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,612.16 : 65,695.32 = 28,750.32 : x
  2. Step 2: Convert to fraction form
    47,612.16/65,695.32 = 28,750.32/x
  3. Step 3: Cross multiply
    47,612.16x = 65,695.32 × 28,750.32
  4. Step 4: Simplify right side
    47,612.16x = 1,888,761,472.50
  5. Step 5: Solve for x
    x = 1,888,761,472.50/47,612.16
  6. Step 6: Final answer
    x = 39,669.73

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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.