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Finding the Fourth Proportional to 103,439.50, 142,746.65 and 58,727.50

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Solution

The fourth proportional to 103,439.50, 142,746.65 and 58,727.50 is: 81,044.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,439.50 : 142,746.65 = 58,727.50 : x
  2. Step 2: Convert to fraction form
    103,439.50/142,746.65 = 58,727.50/x
  3. Step 3: Cross multiply
    103,439.50x = 142,746.65 × 58,727.50
  4. Step 4: Simplify right side
    103,439.50x = 8,383,153,594.24
  5. Step 5: Solve for x
    x = 8,383,153,594.24/103,439.50
  6. Step 6: Final answer
    x = 81,044.03

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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.