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Finding the Fourth Proportional to 70,370.64, 105,516 and 62,069.76

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Solution

The fourth proportional to 70,370.64, 105,516 and 62,069.76 is: 93,069.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,370.64 : 105,516 = 62,069.76 : x
  2. Step 2: Convert to fraction form
    70,370.64/105,516 = 62,069.76/x
  3. Step 3: Cross multiply
    70,370.64x = 105,516 × 62,069.76
  4. Step 4: Simplify right side
    70,370.64x = 6,549,352,796.16
  5. Step 5: Solve for x
    x = 6,549,352,796.16/70,370.64
  6. Step 6: Final answer
    x = 93,069.39

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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.