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Finding the Fourth Proportional to 70,502.83, 105,501.60 and 61,047.75

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Solution

The fourth proportional to 70,502.83, 105,501.60 and 61,047.75 is: 91,352.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,502.83 : 105,501.60 = 61,047.75 : x
  2. Step 2: Convert to fraction form
    70,502.83/105,501.60 = 61,047.75/x
  3. Step 3: Cross multiply
    70,502.83x = 105,501.60 × 61,047.75
  4. Step 4: Simplify right side
    70,502.83x = 6,440,635,301.40
  5. Step 5: Solve for x
    x = 6,440,635,301.40/70,502.83
  6. Step 6: Final answer
    x = 91,352.86

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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.