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Finding the Fourth Proportional to 70,986.76, 97,957.28 and 39,155.58

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Solution

The fourth proportional to 70,986.76, 97,957.28 and 39,155.58 is: 54,032.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,986.76 : 97,957.28 = 39,155.58 : x
  2. Step 2: Convert to fraction form
    70,986.76/97,957.28 = 39,155.58/x
  3. Step 3: Cross multiply
    70,986.76x = 97,957.28 × 39,155.58
  4. Step 4: Simplify right side
    70,986.76x = 3,835,574,113.62
  5. Step 5: Solve for x
    x = 3,835,574,113.62/70,986.76
  6. Step 6: Final answer
    x = 54,032.25

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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.