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Finding the Fourth Proportional to 70,762.10, 97,648.17 and 38,930.18

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Solution

The fourth proportional to 70,762.10, 97,648.17 and 38,930.18 is: 53,721.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,762.10 : 97,648.17 = 38,930.18 : x
  2. Step 2: Convert to fraction form
    70,762.10/97,648.17 = 38,930.18/x
  3. Step 3: Cross multiply
    70,762.10x = 97,648.17 × 38,930.18
  4. Step 4: Simplify right side
    70,762.10x = 3,801,460,834.77
  5. Step 5: Solve for x
    x = 3,801,460,834.77/70,762.10
  6. Step 6: Final answer
    x = 53,721.71

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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.