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Finding the Fourth Proportional to 58,219.52, 87,320.76 and 28,629.40

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Solution

The fourth proportional to 58,219.52, 87,320.76 and 28,629.40 is: 42,939.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,219.52 : 87,320.76 = 28,629.40 : x
  2. Step 2: Convert to fraction form
    58,219.52/87,320.76 = 28,629.40/x
  3. Step 3: Cross multiply
    58,219.52x = 87,320.76 × 28,629.40
  4. Step 4: Simplify right side
    58,219.52x = 2,499,940,966.34
  5. Step 5: Solve for x
    x = 2,499,940,966.34/58,219.52
  6. Step 6: Final answer
    x = 42,939.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.