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Finding the Fourth Proportional to 70,699.54, 97,565.70 and 38,870.50

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Solution

The fourth proportional to 70,699.54, 97,565.70 and 38,870.50 is: 53,641.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,699.54 : 97,565.70 = 38,870.50 : x
  2. Step 2: Convert to fraction form
    70,699.54/97,565.70 = 38,870.50/x
  3. Step 3: Cross multiply
    70,699.54x = 97,565.70 × 38,870.50
  4. Step 4: Simplify right side
    70,699.54x = 3,792,427,541.85
  5. Step 5: Solve for x
    x = 3,792,427,541.85/70,699.54
  6. Step 6: Final answer
    x = 53,641.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.