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Finding the Fourth Proportional to 70,707.60, 97,576.47 and 38,878.56

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Solution

The fourth proportional to 70,707.60, 97,576.47 and 38,878.56 is: 53,652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,707.60 : 97,576.47 = 38,878.56 : x
  2. Step 2: Convert to fraction form
    70,707.60/97,576.47 = 38,878.56/x
  3. Step 3: Cross multiply
    70,707.60x = 97,576.47 × 38,878.56
  4. Step 4: Simplify right side
    70,707.60x = 3,793,632,643.48
  5. Step 5: Solve for x
    x = 3,793,632,643.48/70,707.60
  6. Step 6: Final answer
    x = 53,652.40

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1.5x scale

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.