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Finding the Fourth Proportional to 70,700.95, 97,567.56 and 38,871.86

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Solution

The fourth proportional to 70,700.95, 97,567.56 and 38,871.86 is: 53,643.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,700.95 : 97,567.56 = 38,871.86 : x
  2. Step 2: Convert to fraction form
    70,700.95/97,567.56 = 38,871.86/x
  3. Step 3: Cross multiply
    70,700.95x = 97,567.56 × 38,871.86
  4. Step 4: Simplify right side
    70,700.95x = 3,792,632,776.78
  5. Step 5: Solve for x
    x = 3,792,632,776.78/70,700.95
  6. Step 6: Final answer
    x = 53,643.31

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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.