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Finding the Fourth Proportional to 58,285.60, 87,428.40 and 39,623.20

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Solution

The fourth proportional to 58,285.60, 87,428.40 and 39,623.20 is: 59,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,285.60 : 87,428.40 = 39,623.20 : x
  2. Step 2: Convert to fraction form
    58,285.60/87,428.40 = 39,623.20/x
  3. Step 3: Cross multiply
    58,285.60x = 87,428.40 × 39,623.20
  4. Step 4: Simplify right side
    58,285.60x = 3,464,192,978.88
  5. Step 5: Solve for x
    x = 3,464,192,978.88/58,285.60
  6. Step 6: Final answer
    x = 59,434.80

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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.