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Finding the Fourth Proportional to 58,285.60, 87,428.40 and 21,344.80

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Solution

The fourth proportional to 58,285.60, 87,428.40 and 21,344.80 is: 32,017.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,285.60 : 87,428.40 = 21,344.80 : x
  2. Step 2: Convert to fraction form
    58,285.60/87,428.40 = 21,344.80/x
  3. Step 3: Cross multiply
    58,285.60x = 87,428.40 × 21,344.80
  4. Step 4: Simplify right side
    58,285.60x = 1,866,141,712.32
  5. Step 5: Solve for x
    x = 1,866,141,712.32/58,285.60
  6. Step 6: Final answer
    x = 32,017.20

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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.