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Finding the Fourth Proportional to 58,285.40, 87,428.10 and 57,313.40

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Solution

The fourth proportional to 58,285.40, 87,428.10 and 57,313.40 is: 85,970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,285.40 : 87,428.10 = 57,313.40 : x
  2. Step 2: Convert to fraction form
    58,285.40/87,428.10 = 57,313.40/x
  3. Step 3: Cross multiply
    58,285.40x = 87,428.10 × 57,313.40
  4. Step 4: Simplify right side
    58,285.40x = 5,010,801,666.54
  5. Step 5: Solve for x
    x = 5,010,801,666.54/58,285.40
  6. Step 6: Final answer
    x = 85,970.10

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Similar ratio
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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.